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Pehle kaunsa part complete, exam-ready PDF banaun? Baaki parts isi sequence mein aage bana dunga.

biochemistry nursing education

urea cycle essential amino acids plasma proteins immunoglobulin classification medical biochemistry authoritative

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mkdir -p "/tmp/workspace/nursing-biochemistry-notes/src" "/tmp/workspace/nursing-biochemistry-notes/output" && python - <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.lib import colors from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.enums import TA_CENTER from reportlab.lib.units import cm from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, PageBreak, Table, TableStyle, KeepTogether from reportlab.pdfbase.pdfmetrics import stringWidth from reportlab.pdfbase.ttfonts import TTFont from reportlab.pdfbase import pdfmetrics from reportlab.lib.colors import HexColor from reportlab.pdfbase.pdfmetrics import registerFontFamily from reportlab.platypus import Flowable from reportlab.pdfgen import canvas from reportlab.lib.colors import black from reportlab.pdfbase.pdfmetrics import stringWidth out='/tmp/workspace/nursing-biochemistry-notes/output/Nursing_Biochemistry_Exam_Answers_Part_1.pdf' class NumberedCanvas(canvas.Canvas): def __init__(self,*args,**kwargs): canvas.Canvas.__init__(self,*args,**kwargs); self.pages=[] def showPage(self): self.pages.append(dict(self.__dict__)); self._startPage() def save(self): n=len(self.pages) for state in self.pages: self.__dict__.update(state) self.setFont('Helvetica',8); self.setFillColor(HexColor('#596579')) self.drawRightString(A4[0]-1.55*cm, 1.1*cm, f'Page {self._pageNumber} of {n}') self.drawString(1.55*cm,1.1*cm,'Nursing Biochemistry Exam Answers | Part 1') canvas.Canvas.showPage(self) canvas.Canvas.save(self) class Box(Flowable): def __init__(self, lines, width=15.5*cm, height=1.15*cm): Flowable.__init__(self); self.lines=lines; self.width=width; self.height=height def wrap(self,aw,ah): return self.width,self.height def draw(self): c=self.canv; c.setStrokeColor(HexColor('#216C9A')); c.setFillColor(HexColor('#EAF5FB')); c.roundRect(0,0,self.width,self.height,6,stroke=1,fill=1) c.setFillColor(HexColor('#123E5A')); c.setFont('Helvetica-Bold',8.5) y=self.height-0.38*cm for line in self.lines: c.drawCentredString(self.width/2,y,line); y-=0.34*cm def P(text, style='body'): return Paragraph(text, styles[style]) def bullets(items): return [P('• '+x,'body') for x in items] def h(text): return [Spacer(1,5),P(text,'h2')] def flow(lines): return [Spacer(1,4), Box(lines), Spacer(1,6)] styles=getSampleStyleSheet() styles.add(ParagraphStyle(name='cover', parent=styles['Title'], fontName='Helvetica-Bold', fontSize=25, leading=30, alignment=TA_CENTER, textColor=HexColor('#123E5A'), spaceAfter=12)) styles.add(ParagraphStyle(name='subtitle', parent=styles['Normal'], fontName='Helvetica', fontSize=13, leading=18, alignment=TA_CENTER, textColor=HexColor('#536273'))) styles.add(ParagraphStyle(name='h1x', parent=styles['Heading1'], fontName='Helvetica-Bold', fontSize=18, leading=22, textColor=HexColor('#123E5A'), spaceBefore=4, spaceAfter=9)) styles.add(ParagraphStyle(name='h2', parent=styles['Heading2'], fontName='Helvetica-Bold', fontSize=11.3, leading=14, textColor=HexColor('#126892'), spaceBefore=7, spaceAfter=4)) styles.add(ParagraphStyle(name='body', parent=styles['BodyText'], fontName='Helvetica', fontSize=9.5, leading=13.5, spaceAfter=3)) styles.add(ParagraphStyle(name='small', parent=styles['BodyText'], fontName='Helvetica', fontSize=8.4, leading=11.2, textColor=HexColor('#3D4854'))) styles.add(ParagraphStyle(name='exam', parent=styles['BodyText'], fontName='Helvetica-Bold', fontSize=9.5, leading=13.5, textColor=HexColor('#8B2A17'), backColor=HexColor('#FFF3EC'), borderPadding=5, borderColor=HexColor('#F3B39B'), borderWidth=.5, borderRadius=3, spaceBefore=4, spaceAfter=6)) doc=SimpleDocTemplate(out,pagesize=A4,topMargin=1.5*cm,bottomMargin=1.6*cm,leftMargin=1.55*cm,rightMargin=1.55*cm,title='Nursing Biochemistry Exam Answers Part 1',author='Orris') story=[] story += [Spacer(1,3.8*cm),P('NURSING BIOCHEMISTRY','cover'),P('Exam-Ready Answer Bank | Part 1','subtitle'),Spacer(1,0.6*cm),P('Topics 1-5: Classification of biomolecules, Essential amino acids, Immunoglobulins, Plasma proteins & proteinuria, Urea cycle','subtitle'),Spacer(1,1*cm)] story += [P('<b>Kaise likhna hai:</b> Answer ko definition se start karo, headings underline karo, aur flowchart/diagram zaroor banao. Long answer mein clinical significance ya nursing point add karne se presentation strong hoti hai.','exam'),Spacer(1,1.8*cm),P('Language: Simple English with Hindi explanation. You may write the English terms exactly as given in your university answer sheet.','subtitle'),PageBreak()] # Topic1 story += [P('1. Classification of Carbohydrates, Lipids, Proteins, Amino Acids and Fatty Acids','h1x'),P('<b>Introduction:</b> Biomolecules are organic compounds present in living organisms. Carbohydrates, lipids and proteins are major nutrients and provide energy, structure and regulatory functions.','body'),P('<b>Exam tip:</b> In the answer sheet, draw the classification as a branching chart and write at least two examples under each heading.','exam')] for title, rows in [ ('A. Carbohydrates',[['Basis','Types and examples'],['Number of sugar units','<b>Monosaccharides:</b> glucose, fructose, galactose. <b>Disaccharides:</b> sucrose, lactose, maltose. <b>Oligosaccharides:</b> 3-10 units. <b>Polysaccharides:</b> starch, glycogen, cellulose.'],['Functional group','<b>Aldoses:</b> glucose, galactose. <b>Ketoses:</b> fructose.'],['Carbon atoms','<b>Trioses:</b> glyceraldehyde; <b>pentoses:</b> ribose; <b>hexoses:</b> glucose.'],['Reducing property','<b>Reducing sugars:</b> glucose, lactose, maltose. <b>Non-reducing sugar:</b> sucrose.']]), ('B. Lipids',[['Type','Examples'],['Simple lipids','Fats/oils (triacylglycerols), waxes.'],['Compound or complex lipids','Phospholipids, glycolipids, lipoproteins.'],['Derived lipids','Fatty acids, cholesterol, steroid hormones, fat-soluble vitamins.']]), ('C. Proteins',[['Basis','Types and examples'],['Shape','<b>Fibrous:</b> collagen, keratin. <b>Globular:</b> albumin, hemoglobin, enzymes.'],['Composition','<b>Simple:</b> albumin, globulins. <b>Conjugated:</b> glycoprotein, lipoprotein, phosphoprotein, chromoprotein. <b>Derived:</b> proteoses, peptones, peptides.'],['Nutritional quality','Complete (egg, milk), partially complete (pulses), incomplete (gelatin).']]), ('D. Amino Acids',[['Basis','Types and examples'],['Nutritional need','Essential, non-essential and conditionally essential amino acids.'],['Side-chain nature','Non-polar, polar uncharged, acidic and basic amino acids.'],['Metabolic fate','Glucogenic, ketogenic, or both glucogenic and ketogenic.']]), ('E. Fatty Acids',[['Basis','Types and examples'],['Saturation','<b>Saturated:</b> palmitic, stearic. <b>Unsaturated:</b> oleic, linoleic.'],['Double bonds','Monounsaturated: oleic. Polyunsaturated: linoleic, alpha-linolenic, arachidonic.'],['Chain length','Short-, medium-, long- and very-long-chain fatty acids.'],['Nutritional need','Essential: linoleic and alpha-linolenic acids.']])]: story += h(title) data=[[P(c,'small') for c in r] for r in rows] t=Table(data,colWidths=[4.1*cm,12.1*cm],repeatRows=1) t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),HexColor('#D9ECF6')),('TEXTCOLOR',(0,0),(-1,0),HexColor('#123E5A')),('FONTNAME',(0,0),(-1,0),'Helvetica-Bold'),('GRID',(0,0),(-1,-1),.35,HexColor('#AFC6D3')),('VALIGN',(0,0),(-1,-1),'TOP'),('LEFTPADDING',(0,0),(-1,-1),6),('RIGHTPADDING',(0,0),(-1,-1),6),('TOPPADDING',(0,0),(-1,-1),5),('BOTTOMPADDING',(0,0),(-1,-1),5)])) story += [t] story += [P('<b>Conclusion:</b> Classification helps in understanding the structure, digestion, metabolism and clinical importance of biomolecules.','exam'),PageBreak()] # topic2 story += [P('2. Essential Amino Acids (EAA)','h1x'),P('<b>Definition:</b> Essential amino acids are amino acids that cannot be synthesized by the human body in sufficient quantity. Therefore, they must be supplied through diet.','body')] story += h('List of essential amino acids') story += flow(['PVT TIM HLL','Phenylalanine - Valine - Tryptophan - Threonine - Isoleucine - Methionine - Histidine - Leucine - Lysine']) story += [P('<b>Mnemonic:</b> “PVT TIM HLL”','exam'),P('<b>Note:</b> Histidine is essential in adults as well as in children. Arginine is commonly called conditionally essential, especially during growth, severe illness, trauma or wound healing.','body')] story += h('Classification based on dietary requirement') data=[[P('<b>Group</b>','small'),P('<b>Meaning / examples</b>','small')],[P('Essential','small'),P('Must be obtained from food: Phe, Val, Trp, Thr, Ile, Met, His, Leu, Lys.','small')],[P('Non-essential','small'),P('Can be synthesized in the body under usual conditions: alanine, aspartate, glutamate, serine etc.','small')],[P('Conditionally essential','small'),P('Requirement rises or synthesis is inadequate in special states. Examples: arginine, cysteine, tyrosine, glutamine.','small')]] t=Table(data,colWidths=[4.2*cm,12*cm]);t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),HexColor('#D9ECF6')),('GRID',(0,0),(-1,-1),.35,HexColor('#AFC6D3')),('VALIGN',(0,0),(-1,-1),'TOP'),('PADDING',(0,0),(-1,-1),6)]));story += [t] story += h('Functions and nutritional importance')+bullets(['Needed for synthesis of body proteins, enzymes, hormones, antibodies and hemoglobin.','Required for growth in children, tissue repair, wound healing and maintenance of lean body mass.','Methionine donates methyl groups; tryptophan is a precursor of serotonin and niacin; phenylalanine is a precursor of tyrosine.','Deficiency causes poor growth, muscle wasting, negative nitrogen balance, impaired immunity and delayed wound healing.']) story += h('Dietary sources')+bullets(['Animal sources: egg, milk, meat, fish and poultry provide complete proteins.','Plant sources: soy, pulses, legumes, nuts and cereals. Combining cereal with pulse improves amino-acid quality, for example rice with dal.']) story += [P('<b>Nursing relevance:</b> Assess dietary history, growth, edema, wound healing and protein intake in children, elderly persons, postoperative patients and patients with burns. Encourage high-quality protein as prescribed.','exam'),PageBreak()] #topic3 story += [P('3. Immunoglobulins (Antibodies)','h1x'),P('<b>Definition:</b> Immunoglobulins are glycoproteins produced by plasma cells in response to an antigen. They act as antibodies and provide humoral immunity.','body')] story += h('Basic structure of immunoglobulin')+flow(['Y-shaped molecule: 2 identical heavy chains + 2 identical light chains','Fab region binds antigen | Fc region produces biological effects','Variable region: antigen specificity | Constant region: class and function']) story += h('Classes and functions') data=[[P('<b>Class</b>','small'),P('<b>Main feature / function</b>','small')],[P('IgG','small'),P('Most abundant in serum. Major antibody of secondary response. Crosses placenta and gives passive immunity to fetus. Causes opsonization, neutralization and complement activation.','small')],[P('IgA','small'),P('Present in secretions: saliva, tears, colostrum, breast milk, respiratory and intestinal secretions. Protects mucosal surfaces. Secretory IgA is usually a dimer.','small')],[P('IgM','small'),P('First antibody formed in primary immune response. Pentamer in circulation. Best at agglutination and complement activation. Does not cross placenta.','small')],[P('IgE','small'),P('Binds mast cells and basophils. Important in type I hypersensitivity, allergy and defense against helminths.','small')],[P('IgD','small'),P('Present in very low concentration in serum. Mainly found on B-cell surface and functions as a B-cell receptor.','small')]] t=Table(data,colWidths=[2.5*cm,13.7*cm],repeatRows=1);t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),HexColor('#D9ECF6')),('GRID',(0,0),(-1,-1),.35,HexColor('#AFC6D3')),('VALIGN',(0,0),(-1,-1),'TOP'),('PADDING',(0,0),(-1,-1),5)]));story += [t] story += h('Important points for exam')+bullets(['Primary immune response: IgM appears first, followed by IgG.','Secondary immune response: faster, stronger and predominantly IgG.','Maternal IgG crosses placenta. Colostrum and breast milk provide secretory IgA.','Immunoglobulins help in neutralization, opsonization, agglutination and complement activation.']) story += [P('<b>Clinical and nursing significance:</b> IgE is raised in allergic conditions. Monoclonal immunoglobulins may be seen in plasma-cell disorders. Explain to mothers that colostrum and exclusive breastfeeding help protect the infant through secretory IgA.','exam'),PageBreak()] #topic4 story += [P('4. Plasma Proteins and Proteinuria','h1x'),P('<b>Definition:</b> Plasma proteins are proteins present in blood plasma. Major fractions are albumin, globulins and fibrinogen. Serum is plasma without fibrinogen and most clotting factors.','body')] story += h('Normal plasma protein fractions') data=[[P('<b>Fraction</b>','small'),P('<b>Main source / functions</b>','small')],[P('Albumin','small'),P('Synthesized by liver. Maintains colloid osmotic pressure; transports bilirubin, fatty acids, calcium, thyroid and some drugs; acts as a protein reserve.','small')],[P('Globulins','small'),P('Alpha and beta globulins transport lipids, metals and hormones. Gamma globulins are mainly immunoglobulins and take part in immunity.','small')],[P('Fibrinogen','small'),P('Synthesized by liver. Essential for blood clotting; converted to fibrin by thrombin. Present in plasma but absent in serum.','small')]] t=Table(data,colWidths=[3.3*cm,12.9*cm],repeatRows=1);t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),HexColor('#D9ECF6')),('GRID',(0,0),(-1,-1),.35,HexColor('#AFC6D3')),('VALIGN',(0,0),(-1,-1),'TOP'),('PADDING',(0,0),(-1,-1),6)]));story += [t] story += h('Functions of plasma proteins')+bullets(['Maintain oncotic pressure and blood volume, chiefly by albumin.','Transport substances such as hormones, lipids, bilirubin, calcium and drugs.','Buffer blood pH.','Participate in immunity, clotting and defense mechanisms.','Serve as nutritional protein reserve.']) story += h('Proteinuria')+[P('<b>Definition:</b> Proteinuria means abnormal presence or increased excretion of protein in urine. In healthy adults, total urinary protein excretion is usually less than 150 mg/day.','body')] story += h('Types and causes') data=[[P('<b>Type</b>','small'),P('<b>Mechanism and examples</b>','small')],[P('Transient / functional','small'),P('Temporary: fever, strenuous exercise, stress, dehydration; may occur in orthostatic proteinuria.','small')],[P('Glomerular','small'),P('Increased glomerular permeability. Examples: glomerulonephritis, diabetic kidney disease, nephrotic syndrome. Albumin is common.','small')],[P('Tubular','small'),P('Defective reabsorption of low molecular weight proteins due to tubular damage.','small')],[P('Overflow','small'),P('Excess low molecular weight proteins in blood exceed tubular reabsorptive capacity, for example light chains in multiple myeloma.','small')],[P('Post-renal','small'),P('Protein added distal to kidney, such as urinary tract infection or inflammation.','small')]] t=Table(data,colWidths=[3.7*cm,12.5*cm],repeatRows=1);t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),HexColor('#D9ECF6')),('GRID',(0,0),(-1,-1),.35,HexColor('#AFC6D3')),('VALIGN',(0,0),(-1,-1),'TOP'),('PADDING',(0,0),(-1,-1),5)]));story += [t] story += [P('<b>Nursing points:</b> Check urine dipstick as ordered, collect a clean sample correctly, monitor edema, blood pressure, urine output and daily weight. Persistent proteinuria needs medical evaluation. Heavy proteinuria with edema may suggest nephrotic syndrome.','exam'),PageBreak()] #topic5 story += [P('5. Urea Cycle (Ornithine Cycle)','h1x'),P('<b>Definition:</b> The urea cycle is the pathway by which toxic ammonia is converted into urea in the liver. Urea is then transported in blood and excreted by kidneys.','body')] story += h('Site, purpose and energy')+bullets(['Occurs only in liver. First two reactions occur in mitochondria; remaining reactions occur in cytosol.','Main purpose: detoxification and excretion of ammonia produced during amino-acid catabolism.','Requires 3 ATP molecules, equivalent to 4 high-energy phosphate bonds.','Nitrogen atoms of urea are supplied by free ammonia and aspartate. Carbon is supplied by carbon dioxide (bicarbonate).']) story += h('Steps of urea cycle') story += flow(['Mitochondria: NH3 + CO2 + 2 ATP --CPS-I--> Carbamoyl phosphate','Carbamoyl phosphate + Ornithine --OTC--> Citrulline','Cytosol: Citrulline + Aspartate + ATP --ASS--> Argininosuccinate','Argininosuccinate --ASL--> Arginine + Fumarate','Arginine + H2O --Arginase--> Urea + Ornithine (re-enters mitochondria)']) story += [P('<b>Abbreviations:</b> CPS-I = carbamoyl phosphate synthetase I; OTC = ornithine transcarbamylase; ASS = argininosuccinate synthetase; ASL = argininosuccinate lyase.','small')] story += h('Regulation')+bullets(['Carbamoyl phosphate synthetase-I is the rate-limiting enzyme.','It requires N-acetylglutamate as an essential activator.','High-protein diet and fasting increase urea-cycle enzyme activity.']) story += h('Clinical significance')+bullets(['Defects in urea-cycle enzymes cause hyperammonemia. Ammonia is especially toxic to the brain and may cause vomiting, lethargy, irritability, altered sensorium, seizures and coma.','Ornithine transcarbamylase deficiency is the most common inherited urea-cycle disorder and is X-linked.','In severe liver dysfunction, impaired urea formation can contribute to hyperammonemia and hepatic encephalopathy.']) story += [P('<b>Nursing points:</b> In a patient with suspected hyperammonemia, observe mental status and neurological signs, avoid delay in reporting altered sensorium, monitor prescribed investigations and follow the medical nutrition plan. Do not independently restrict protein unless ordered.','exam')] story += [Spacer(1,9),P('References used for study preparation','h2'),P('Lippincott Illustrated Reviews: Biochemistry, 8th ed. | Harper’s Illustrated Biochemistry, 32nd ed. | Basic Medical Biochemistry: A Clinical Approach, 6th ed. | Park’s Textbook of Preventive and Social Medicine.','small'),P('These notes are for exam preparation. Clinical care must follow the treating clinician’s orders and local protocols.','small')] doc.build(story,canvasmaker=NumberedCanvas) print(out) PY python - <<'PY' from pypdf import PdfReader p='/tmp/workspace/nursing-biochemistry-notes/output/Nursing_Biochemistry_Exam_Answers_Part_1.pdf' r=PdfReader(p) print('pages',len(r.pages),'size',__import__('os').path.getsize(p)) print(r.pages[0].extract_text()[:250]) PY

~/nursing-biochemistry-notes

python - <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.lib.styles import getSampleStyleSheet,ParagraphStyle from reportlab.lib.enums import TA_CENTER from reportlab.lib.colors import HexColor from reportlab.lib.units import cm from reportlab.platypus import SimpleDocTemplate,Paragraph,Spacer,PageBreak,Table,TableStyle from reportlab.pdfgen import canvas from pypdf import PdfReader import os out='/tmp/workspace/nursing-biochemistry-notes/output/Nursing_Biochemistry_Exam_Answers_Part_1.pdf' S=getSampleStyleSheet(); S.add(ParagraphStyle(name='titlex',parent=S['Title'],fontName='Helvetica-Bold',fontSize=23,leading=28,alignment=TA_CENTER,textColor=HexColor('#123E5A'))); S.add(ParagraphStyle(name='topic',parent=S['Heading1'],fontName='Helvetica-Bold',fontSize=17,leading=21,textColor=HexColor('#123E5A'),spaceAfter=8)); S.add(ParagraphStyle(name='headx',parent=S['Heading2'],fontName='Helvetica-Bold',fontSize=11,leading=14,textColor=HexColor('#126892'),spaceBefore=7,spaceAfter=4)); S.add(ParagraphStyle(name='bodyx',parent=S['BodyText'],fontSize=9.4,leading=13,spaceAfter=3)); S.add(ParagraphStyle(name='note',parent=S['BodyText'],fontName='Helvetica-Bold',fontSize=9.2,leading=13,textColor=HexColor('#85311D'),backColor=HexColor('#FFF2EA'),borderPadding=5,spaceBefore=4,spaceAfter=7)); S.add(ParagraphStyle(name='tiny',parent=S['BodyText'],fontSize=8.2,leading=10.5)) def p(x,sty='bodyx'): return Paragraph(x,S[sty]) def H(x): return [p(x,'headx')] def bl(a): return [p('• '+x) for x in a] def tab(data,widths): t=Table([[p(c,'tiny') for c in r] for r in data],colWidths=widths,repeatRows=1); t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),HexColor('#D9ECF6')),('TEXTCOLOR',(0,0),(-1,0),HexColor('#123E5A')),('FONTNAME',(0,0),(-1,0),'Helvetica-Bold'),('GRID',(0,0),(-1,-1),.35,HexColor('#AFC6D3')),('VALIGN',(0,0),(-1,-1),'TOP'),('LEFTPADDING',(0,0),(-1,-1),5),('RIGHTPADDING',(0,0),(-1,-1),5),('TOPPADDING',(0,0),(-1,-1),4),('BOTTOMPADDING',(0,0),(-1,-1),4)]));return t def box(lines): return tab([["<b>FLOWCHART TO DRAW IN EXAM</b>"],["<br/>"+'<br/>'.join(lines)], [16.2*cm]) class C(canvas.Canvas): def __init__(self,*a,**kw): super().__init__(*a,**kw);self.saved=[] def showPage(self): self.saved.append(dict(self.__dict__));self._startPage() def save(self): total=len(self.saved) for st in self.saved: self.__dict__.update(st);self.setFont('Helvetica',8);self.setFillColor(HexColor('#596579'));self.drawString(1.55*cm,1.05*cm,'Nursing Biochemistry Exam Answers | Part 1');self.drawRightString(A4[0]-1.55*cm,1.05*cm,f'Page {self._pageNumber} of {total}');super().showPage() super().save() story=[Spacer(1,3.5*cm),p('NURSING BIOCHEMISTRY','titlex'),Spacer(1,8),p('Exam-Ready Answer Bank | Part 1', 'titlex'),Spacer(1,18),p('Topics 1-5: Classification of biomolecules, Essential amino acids, Immunoglobulins, Plasma proteins & proteinuria, Urea cycle','bodyx'),Spacer(1,20),p('<b>Writing format:</b> Start with definition. Underline headings. Draw the given flowchart/branching diagram. End the long answer with clinical significance or nursing points.','note'),PageBreak()] #1 story += [p('1. Classification of Carbohydrates, Lipids, Proteins, Amino Acids and Fatty Acids','topic'),p('<b>Introduction:</b> Biomolecules are organic compounds of living organisms. Carbohydrates, lipids and proteins provide energy, structure and regulatory functions.','bodyx'),p('<b>Exam tip:</b> Make a branching chart and write two examples under each class.','note')] for title,data in [ ('A. Carbohydrates',[['Basis','Classification and examples'],['Number of units','Monosaccharides: glucose, fructose, galactose. Disaccharides: sucrose, lactose, maltose. Oligosaccharides: 3-10 units. Polysaccharides: starch, glycogen, cellulose.'],['Functional group','Aldoses: glucose, galactose. Ketoses: fructose.'],['Carbon atoms','Trioses, pentoses such as ribose, and hexoses such as glucose.'],['Reducing property','Reducing: glucose, lactose, maltose. Non-reducing: sucrose.']]), ('B. Lipids',[['Type','Examples'],['Simple lipids','Fats/oils (triacylglycerols), waxes.'],['Compound lipids','Phospholipids, glycolipids, lipoproteins.'],['Derived lipids','Fatty acids, cholesterol, steroid hormones, fat-soluble vitamins.']]), ('C. Proteins',[['Basis','Classification and examples'],['Shape','Fibrous: collagen, keratin. Globular: albumin, hemoglobin, enzymes.'],['Composition','Simple: albumin, globulins. Conjugated: glycoproteins, lipoproteins, phosphoproteins, chromoproteins. Derived: peptides, peptones.'],['Nutritional quality','Complete: egg, milk. Partially complete: pulses. Incomplete: gelatin.']]), ('D. Amino acids',[['Basis','Classification'],['Nutritional need','Essential, non-essential and conditionally essential.'],['Side chain','Nonpolar, polar, acidic and basic.'],['Metabolic fate','Glucogenic, ketogenic, or both.']]), ('E. Fatty acids',[['Basis','Classification and examples'],['Saturation','Saturated: palmitic, stearic. Unsaturated: oleic, linoleic.'],['Double bonds','Monounsaturated: oleic. Polyunsaturated: linoleic, alpha-linolenic, arachidonic.'],['Chain length','Short-, medium-, long- and very-long-chain fatty acids.'],['Dietary need','Essential: linoleic and alpha-linolenic acids.']])]: story += H(title)+[tab(data,[4.1*cm,12.1*cm])] story += [p('<b>Conclusion:</b> Classification helps us understand digestion, metabolism and clinical importance of biomolecules.','note'),PageBreak()] #2 story += [p('2. Essential Amino Acids (EAA)','topic'),p('<b>Definition:</b> Essential amino acids cannot be synthesized by the human body in sufficient amount; therefore, they must be obtained from food.','bodyx')]+H('List and mnemonic')+[box(['PVT TIM HLL','Phenylalanine, Valine, Tryptophan, Threonine, Isoleucine, Methionine, Histidine, Leucine, Lysine'])]+[p('<b>Mnemonic: PVT TIM HLL.</b> Histidine is essential. Arginine is conditionally essential, especially during growth, trauma and wound healing.','note')]+H('Classification')+[tab([['Group','Meaning / examples'],['Essential','Must be supplied in diet: Phe, Val, Trp, Thr, Ile, Met, His, Leu, Lys.'],['Non-essential','Usually synthesized in body: alanine, aspartate, glutamate, serine etc.'],['Conditionally essential','Need increases or synthesis is inadequate in special states: arginine, cysteine, tyrosine, glutamine.']],[4.1*cm,12.1*cm])]+H('Functions and importance')+bl(['Needed for proteins, enzymes, hormones, antibodies and hemoglobin.','Required for growth, tissue repair, wound healing and maintenance of muscle mass.','Methionine is a methyl donor; tryptophan is a precursor of serotonin and niacin; phenylalanine gives tyrosine.','Deficiency causes poor growth, muscle wasting, negative nitrogen balance, poor immunity and delayed healing.'])+H('Sources')+bl(['Egg, milk, meat, fish and poultry are complete protein sources.','Pulses, soy, nuts and cereals are plant sources. Cereal-pulse combination, such as rice with dal, improves protein quality.'])+[p('<b>Nursing relevance:</b> Assess diet, growth, edema, wound healing and protein intake in children, older adults, burn and postoperative patients.','note'),PageBreak()] #3 story += [p('3. Immunoglobulins (Antibodies)','topic'),p('<b>Definition:</b> Immunoglobulins are glycoproteins produced by plasma cells in response to antigens. They act as antibodies and provide humoral immunity.','bodyx')]+H('Basic structure')+[box(['Y-shaped molecule: two identical heavy chains + two identical light chains','Fab region binds antigen | Fc region produces biological effects','Variable region gives antigen specificity | Constant region determines class'])]+H('Classes and functions')+[tab([['Class','Main feature / function'],['IgG','Most abundant serum antibody. Main antibody of secondary response. Crosses placenta and provides passive fetal immunity. Causes neutralization, opsonization and complement activation.'],['IgA','Present in saliva, tears, colostrum, breast milk, respiratory and intestinal secretions. Protects mucosa. Secretory IgA is usually a dimer.'],['IgM','First antibody in primary response. Pentamer in blood. Best for agglutination and complement activation. Does not cross placenta.'],['IgE','Binds mast cells and basophils. Important in type I hypersensitivity, allergy and helminth defense.'],['IgD','Very low serum level; mainly on B-cell surface as a receptor.']],[2.3*cm,13.9*cm])]+H('Important points')+bl(['Primary immune response: IgM appears first, then IgG.','Secondary response: faster, stronger and mostly IgG.','Maternal IgG crosses placenta. Colostrum and breast milk give secretory IgA.','Antibodies cause neutralization, opsonization, agglutination and complement activation.'])+[p('<b>Clinical and nursing significance:</b> IgE is associated with allergy. Teach mothers that colostrum and exclusive breastfeeding help protect infants through secretory IgA.','note'),PageBreak()] #4 story += [p('4. Plasma Proteins and Proteinuria','topic'),p('<b>Definition:</b> Plasma proteins are proteins present in blood plasma. Major fractions are albumin, globulins and fibrinogen. Serum is plasma without fibrinogen and most clotting factors.','bodyx')]+H('Plasma protein fractions')+[tab([['Fraction','Source / functions'],['Albumin','Made by liver. Maintains colloid osmotic pressure; transports bilirubin, fatty acids, calcium, thyroid hormones and some drugs; protein reserve.'],['Globulins','Alpha and beta globulins transport lipids, metals and hormones. Gamma globulins are mainly immunoglobulins.'],['Fibrinogen','Made by liver. Required for clotting and converted to fibrin by thrombin. Present in plasma, absent in serum.']],[3.3*cm,12.9*cm])]+H('Functions')+bl(['Maintain oncotic pressure and blood volume.','Transport hormones, lipids, bilirubin, calcium and drugs.','Buffer blood pH.','Take part in immunity and clotting.','Act as nutritional protein reserve.'])+H('Proteinuria')+[p('<b>Definition:</b> Proteinuria means abnormal presence or increased excretion of protein in urine. Normal total urine protein is generally less than 150 mg/day.','bodyx'),tab([['Type','Mechanism / examples'],['Transient / functional','Fever, exercise, stress, dehydration; may be orthostatic.'],['Glomerular','Increased permeability: glomerulonephritis, diabetic kidney disease, nephrotic syndrome. Albumin common.'],['Tubular','Defective reabsorption of low molecular weight proteins due to tubular damage.'],['Overflow','Excess proteins in blood, for example light chains in multiple myeloma.'],['Post-renal','Protein added after kidney due to UTI or inflammation.']],[3.7*cm,12.5*cm])]+[p('<b>Nursing points:</b> Collect clean urine sample properly. Monitor dipstick result, edema, BP, urine output and daily weight. Persistent proteinuria needs evaluation.','note'),PageBreak()] #5 story += [p('5. Urea Cycle (Ornithine Cycle)','topic'),p('<b>Definition:</b> Urea cycle is the pathway in which toxic ammonia is converted into urea in the liver. Urea travels in blood to kidneys and is excreted in urine.','bodyx')]+H('Site, purpose and energy')+bl(['Occurs only in liver. First two steps are mitochondrial; remaining steps occur in cytosol.','Main purpose is detoxification of ammonia formed during amino-acid metabolism.','Requires 3 ATP, equal to 4 high-energy phosphate bonds.','Two nitrogen atoms of urea come from free ammonia and aspartate; carbon comes from CO2/bicarbonate.'])+H('Steps of urea cycle')+[box(['MITOCHONDRIA: NH3 + CO2 + 2 ATP -- CPS-I --> Carbamoyl phosphate','Carbamoyl phosphate + Ornithine -- OTC --> Citrulline','CYTOSOL: Citrulline + Aspartate + ATP -- ASS --> Argininosuccinate','Argininosuccinate -- ASL --> Arginine + Fumarate','Arginine + H2O -- Arginase --> Urea + Ornithine (returns to mitochondria)'])]+[p('<b>Abbreviations:</b> CPS-I: carbamoyl phosphate synthetase-I; OTC: ornithine transcarbamylase; ASS: argininosuccinate synthetase; ASL: argininosuccinate lyase.','tiny')]+H('Regulation')+bl(['CPS-I is rate-limiting and requires N-acetylglutamate as activator.','High-protein diet and fasting increase urea-cycle enzyme activity.'])+H('Clinical significance')+bl(['Enzyme defects cause hyperammonemia. Ammonia is neurotoxic and can cause vomiting, lethargy, altered sensorium, seizures and coma.','OTC deficiency is the most common inherited urea-cycle disorder and is X-linked.','Severe liver dysfunction may impair urea formation and contribute to hyperammonemia and hepatic encephalopathy.'])+[p('<b>Nursing points:</b> Observe neurological status, report altered sensorium urgently, monitor ordered investigations and follow the prescribed nutrition plan. Do not independently restrict protein.','note'),Spacer(1,8),p('<b>Study sources:</b> Lippincott Illustrated Reviews: Biochemistry, 8th ed.; Harper’s Illustrated Biochemistry, 32nd ed.; Basic Medical Biochemistry: A Clinical Approach, 6th ed.; Park’s Textbook of Preventive and Social Medicine.','tiny')] SimpleDocTemplate(out,pagesize=A4,topMargin=1.5*cm,bottomMargin=1.6*cm,leftMargin=1.55*cm,rightMargin=1.55*cm,title='Nursing Biochemistry Exam Answers Part 1').build(story,canvasmaker=C) r=PdfReader(out); print('Created:',out,'Pages:',len(r.pages),'Bytes:',os.path.getsize(out)); print(r.pages[1].extract_text()[:120]) PY

python - <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.lib import colors from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.enums import TA_CENTER from reportlab.lib.units import cm from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, PageBreak, Table, TableStyle from reportlab.pdfgen import canvas from pypdf import PdfReader import os out='/tmp/workspace/nursing-biochemistry-notes/output/Nursing_Biochemistry_Exam_Answers_Part_1.pdf' S=getSampleStyleSheet() S.add(ParagraphStyle(name='T',parent=S['Title'],fontName='Helvetica-Bold',fontSize=23,leading=28,alignment=TA_CENTER,textColor=colors.HexColor('#123E5A'))) S.add(ParagraphStyle(name='Q',parent=S['Heading1'],fontName='Helvetica-Bold',fontSize=16,leading=20,textColor=colors.HexColor('#123E5A'),spaceAfter=8)) S.add(ParagraphStyle(name='H',parent=S['Heading2'],fontName='Helvetica-Bold',fontSize=11,leading=14,textColor=colors.HexColor('#126892'),spaceBefore=7,spaceAfter=4)) S.add(ParagraphStyle(name='B',parent=S['BodyText'],fontSize=9.3,leading=12.7,spaceAfter=3)) S.add(ParagraphStyle(name='N',parent=S['BodyText'],fontName='Helvetica-Bold',fontSize=9,leading=12.5,textColor=colors.HexColor('#84301D'),backColor=colors.HexColor('#FFF2EA'),borderPadding=5,spaceBefore=4,spaceAfter=7)) S.add(ParagraphStyle(name='s',parent=S['BodyText'],fontSize=8.1,leading=10.2)) def p(x,st='B'): return Paragraph(x,S[st]) def bullets(xs): return [p('• '+x) for x in xs] def table(rows,widths): t=Table([[p(c,'s') for c in row] for row in rows],colWidths=widths,repeatRows=1) t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),colors.HexColor('#D9ECF6')),('TEXTCOLOR',(0,0),(-1,0),colors.HexColor('#123E5A')),('FONTNAME',(0,0),(-1,0),'Helvetica-Bold'),('GRID',(0,0),(-1,-1),.35,colors.HexColor('#AFC6D3')),('VALIGN',(0,0),(-1,-1),'TOP'),('LEFTPADDING',(0,0),(-1,-1),5),('RIGHTPADDING',(0,0),(-1,-1),5),('TOPPADDING',(0,0),(-1,-1),4),('BOTTOMPADDING',(0,0),(-1,-1),4)])); return t def flow(lines): return table([['<b>FLOWCHART / DIAGRAM TO DRAW</b>'],['<br/>'.join(lines)]],[16.2*cm]) class PageNum(canvas.Canvas): def __init__(self,*a,**kw): canvas.Canvas.__init__(self,*a,**kw);self.states=[] def showPage(self): self.states.append(dict(self.__dict__));self._startPage() def save(self): total=len(self.states) for st in self.states: self.__dict__.update(st);self.setFillColor(colors.HexColor('#596579'));self.setFont('Helvetica',8);self.drawString(1.55*cm,1.05*cm,'Nursing Biochemistry Exam Answers | Part 1');self.drawRightString(A4[0]-1.55*cm,1.05*cm,f'Page {self._pageNumber} of {total}');canvas.Canvas.showPage(self) canvas.Canvas.save(self) st=[] st += [Spacer(1,3.5*cm),p('NURSING BIOCHEMISTRY','T'),Spacer(1,8),p('Exam-Ready Answer Bank | Part 1','T'),Spacer(1,18),p('Topics 1-5: Classification of biomolecules, Essential amino acids, Immunoglobulins, Plasma proteins & proteinuria, Urea cycle'),Spacer(1,20),p('<b>Writing format:</b> Start with definition. Underline headings. Draw the given flowchart or branching diagram. End long answers with clinical significance or nursing points.','N'),PageBreak()] #1 st += [p('1. Classification of Carbohydrates, Lipids, Proteins, Amino Acids and Fatty Acids','Q'),p('<b>Introduction:</b> Biomolecules are organic compounds found in living organisms. Carbohydrates, lipids and proteins provide energy, structure and regulatory functions.'),p('<b>Exam tip:</b> Make a branching chart and add at least two examples under each group.','N')] for hd,data,w in [ ('A. Carbohydrates',[['Basis','Classification and examples'],['Number of units','Monosaccharides: glucose, fructose, galactose. Disaccharides: sucrose, lactose, maltose. Oligosaccharides: 3-10 units. Polysaccharides: starch, glycogen, cellulose.'],['Functional group','Aldoses: glucose, galactose. Ketoses: fructose.'],['Carbon atoms','Trioses, pentoses such as ribose, and hexoses such as glucose.'],['Reducing property','Reducing: glucose, lactose, maltose. Non-reducing: sucrose.']],[4.1*cm,12.1*cm]), ('B. Lipids',[['Type','Examples'],['Simple lipids','Fats/oils (triacylglycerols), waxes.'],['Compound lipids','Phospholipids, glycolipids, lipoproteins.'],['Derived lipids','Fatty acids, cholesterol, steroid hormones, fat-soluble vitamins.']],[4.1*cm,12.1*cm]), ('C. Proteins',[['Basis','Classification and examples'],['Shape','Fibrous: collagen, keratin. Globular: albumin, hemoglobin, enzymes.'],['Composition','Simple: albumin, globulins. Conjugated: glycoproteins, lipoproteins, phosphoproteins, chromoproteins. Derived: peptides and peptones.'],['Nutritional quality','Complete: egg, milk. Partially complete: pulses. Incomplete: gelatin.']],[4.1*cm,12.1*cm]), ('D. Amino acids',[['Basis','Classification'],['Nutritional need','Essential, non-essential and conditionally essential.'],['Side chain','Nonpolar, polar, acidic and basic.'],['Metabolic fate','Glucogenic, ketogenic, or both.']],[4.1*cm,12.1*cm]), ('E. Fatty acids',[['Basis','Classification and examples'],['Saturation','Saturated: palmitic, stearic. Unsaturated: oleic, linoleic.'],['Double bonds','Monounsaturated: oleic. Polyunsaturated: linoleic, alpha-linolenic, arachidonic.'],['Chain length','Short-, medium-, long- and very-long-chain fatty acids.'],['Dietary need','Essential: linoleic and alpha-linolenic acids.']],[4.1*cm,12.1*cm])]: st += [p(hd,'H'),table(data,w)] st += [p('<b>Conclusion:</b> Classification helps in understanding digestion, metabolism and clinical importance of biomolecules.','N'),PageBreak()] #2 st += [p('2. Essential Amino Acids (EAA)','Q'),p('<b>Definition:</b> Essential amino acids cannot be synthesized by the human body in sufficient amount; therefore, they must be obtained from food.'),p('List and mnemonic','H'),flow(['PVT TIM HLL','Phenylalanine, Valine, Tryptophan, Threonine, Isoleucine, Methionine, Histidine, Leucine, Lysine']),p('<b>Mnemonic: PVT TIM HLL.</b> Histidine is essential. Arginine is conditionally essential, especially during growth, trauma and wound healing.','N'),p('Classification','H'),table([['Group','Meaning / examples'],['Essential','Must be supplied in diet: Phe, Val, Trp, Thr, Ile, Met, His, Leu, Lys.'],['Non-essential','Usually synthesized in body: alanine, aspartate, glutamate and serine.'],['Conditionally essential','Need increases or synthesis is inadequate in special states: arginine, cysteine, tyrosine, glutamine.']],[4.1*cm,12.1*cm]),p('Functions and importance','H')]+bullets(['Needed for proteins, enzymes, hormones, antibodies and hemoglobin.','Required for growth, tissue repair, wound healing and maintenance of muscle mass.','Methionine is a methyl donor; tryptophan is a precursor of serotonin and niacin; phenylalanine gives tyrosine.','Deficiency causes poor growth, muscle wasting, negative nitrogen balance, poor immunity and delayed healing.'])+[p('Sources','H')]+bullets(['Egg, milk, meat, fish and poultry are complete protein sources.','Pulses, soy, nuts and cereals are plant sources. Cereal-pulse combination such as rice with dal improves protein quality.'])+[p('<b>Nursing relevance:</b> Assess diet, growth, edema, wound healing and protein intake in children, older adults, burn and postoperative patients.','N'),PageBreak()] #3 st += [p('3. Immunoglobulins (Antibodies)','Q'),p('<b>Definition:</b> Immunoglobulins are glycoproteins produced by plasma cells in response to antigens. They act as antibodies and provide humoral immunity.'),p('Basic structure','H'),flow(['Y-shaped molecule: two identical heavy chains + two identical light chains','Fab region binds antigen | Fc region produces biological effects','Variable region gives antigen specificity | Constant region determines class']),p('Classes and functions','H'),table([['Class','Main feature / function'],['IgG','Most abundant serum antibody. Main antibody of secondary response. Crosses placenta and provides passive fetal immunity. Causes neutralization, opsonization and complement activation.'],['IgA','Present in saliva, tears, colostrum, breast milk, respiratory and intestinal secretions. Protects mucosa. Secretory IgA is usually a dimer.'],['IgM','First antibody in primary response. Pentamer in blood. Best for agglutination and complement activation. Does not cross placenta.'],['IgE','Binds mast cells and basophils. Important in type I hypersensitivity, allergy and helminth defense.'],['IgD','Very low serum level; mainly on B-cell surface as a receptor.']],[2.3*cm,13.9*cm]),p('Important points','H')]+bullets(['Primary immune response: IgM appears first, then IgG.','Secondary response: faster, stronger and mostly IgG.','Maternal IgG crosses placenta. Colostrum and breast milk provide secretory IgA.','Antibodies cause neutralization, opsonization, agglutination and complement activation.'])+[p('<b>Clinical and nursing significance:</b> IgE is associated with allergy. Teach mothers that colostrum and exclusive breastfeeding protect infants through secretory IgA.','N'),PageBreak()] #4 st += [p('4. Plasma Proteins and Proteinuria','Q'),p('<b>Definition:</b> Plasma proteins are proteins present in blood plasma. Major fractions are albumin, globulins and fibrinogen. Serum is plasma without fibrinogen and most clotting factors.'),p('Plasma protein fractions','H'),table([['Fraction','Source / functions'],['Albumin','Made by liver. Maintains colloid osmotic pressure; transports bilirubin, fatty acids, calcium, thyroid hormones and some drugs; acts as protein reserve.'],['Globulins','Alpha and beta globulins transport lipids, metals and hormones. Gamma globulins are mainly immunoglobulins.'],['Fibrinogen','Made by liver. Required for clotting and converted to fibrin by thrombin. Present in plasma, absent in serum.']],[3.3*cm,12.9*cm]),p('Functions','H')]+bullets(['Maintain oncotic pressure and blood volume.','Transport hormones, lipids, bilirubin, calcium and drugs.','Buffer blood pH.','Take part in immunity and clotting.','Act as nutritional protein reserve.'])+[p('Proteinuria','H'),p('<b>Definition:</b> Proteinuria means abnormal presence or increased excretion of protein in urine. Normal total urine protein is generally less than 150 mg/day.'),table([['Type','Mechanism / examples'],['Transient / functional','Fever, exercise, stress, dehydration; may be orthostatic.'],['Glomerular','Increased permeability: glomerulonephritis, diabetic kidney disease, nephrotic syndrome. Albumin common.'],['Tubular','Defective reabsorption of low molecular weight proteins due to tubular damage.'],['Overflow','Excess proteins in blood, for example light chains in multiple myeloma.'],['Post-renal','Protein added after kidney due to UTI or inflammation.']],[3.7*cm,12.5*cm]),p('<b>Nursing points:</b> Collect clean urine sample correctly. Monitor dipstick result, edema, BP, urine output and daily weight. Persistent proteinuria needs medical evaluation.','N'),PageBreak()] #5 st += [p('5. Urea Cycle (Ornithine Cycle)','Q'),p('<b>Definition:</b> Urea cycle is the pathway in which toxic ammonia is converted into urea in the liver. Urea travels in blood to kidneys and is excreted in urine.'),p('Site, purpose and energy','H')]+bullets(['Occurs only in liver. First two steps are mitochondrial; remaining steps occur in cytosol.','Main purpose is detoxification of ammonia formed during amino-acid metabolism.','Requires 3 ATP, equal to 4 high-energy phosphate bonds.','Two nitrogen atoms of urea come from free ammonia and aspartate; carbon comes from CO2/bicarbonate.'])+[p('Steps of urea cycle','H'),flow(['MITOCHONDRIA: NH3 + CO2 + 2 ATP -- CPS-I --> Carbamoyl phosphate','Carbamoyl phosphate + Ornithine -- OTC --> Citrulline','CYTOSOL: Citrulline + Aspartate + ATP -- ASS --> Argininosuccinate','Argininosuccinate -- ASL --> Arginine + Fumarate','Arginine + H2O -- Arginase --> Urea + Ornithine (returns to mitochondria)']),p('<b>Abbreviations:</b> CPS-I: carbamoyl phosphate synthetase-I; OTC: ornithine transcarbamylase; ASS: argininosuccinate synthetase; ASL: argininosuccinate lyase.','s'),p('Regulation','H')]+bullets(['CPS-I is rate-limiting and requires N-acetylglutamate as activator.','High-protein diet and fasting increase urea-cycle enzyme activity.'])+[p('Clinical significance','H')]+bullets(['Enzyme defects cause hyperammonemia. Ammonia is neurotoxic and can cause vomiting, lethargy, altered sensorium, seizures and coma.','OTC deficiency is the most common inherited urea-cycle disorder and is X-linked.','Severe liver dysfunction may impair urea formation and contribute to hyperammonemia and hepatic encephalopathy.'])+[p('<b>Nursing points:</b> Observe neurological status, report altered sensorium urgently, monitor ordered investigations and follow prescribed nutrition plan. Do not independently restrict protein.','N'),Spacer(1,8),p('<b>Study sources:</b> Lippincott Illustrated Reviews: Biochemistry, 8th ed.; Harper’s Illustrated Biochemistry, 32nd ed.; Basic Medical Biochemistry: A Clinical Approach, 6th ed.; Park’s Textbook of Preventive and Social Medicine.','s')] SimpleDocTemplate(out,pagesize=A4,topMargin=1.5*cm,bottomMargin=1.6*cm,leftMargin=1.55*cm,rightMargin=1.55*cm,title='Nursing Biochemistry Exam Answers Part 1').build(st,canvasmaker=PageNum) r=PdfReader(out);print('OK pages=',len(r.pages),'bytes=',os.path.getsize(out));print(r.pages[0].extract_text()[:100]) PY

~/nursing-biochemistry-notes/

diabetes hypoglycemia acid base disorders

ADA Standards diabetes diagnostic criteria fasting glucose OGTT A1c 2026

python - <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.lib import colors from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.units import cm from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, PageBreak, Table, TableStyle from reportlab.pdfgen import canvas from pypdf import PdfReader import os base='/tmp/workspace/nursing-biochemistry-notes/output' S=getSampleStyleSheet() S.add(ParagraphStyle(name='QX',parent=S['Heading1'],fontName='Helvetica-Bold',fontSize=16,leading=19,textColor=colors.HexColor('#123E5A'),spaceBefore=2,spaceAfter=7)) S.add(ParagraphStyle(name='HX',parent=S['Heading2'],fontName='Helvetica-Bold',fontSize=10.8,leading=13,textColor=colors.HexColor('#126892'),spaceBefore=6,spaceAfter=3)) S.add(ParagraphStyle(name='BX',parent=S['BodyText'],fontSize=9.25,leading=12.3,spaceAfter=3)) S.add(ParagraphStyle(name='NX',parent=S['BodyText'],fontName='Helvetica-Bold',fontSize=9,leading=12.2,textColor=colors.HexColor('#84301D'),backColor=colors.HexColor('#FFF2EA'),borderPadding=5,spaceBefore=4,spaceAfter=6)) S.add(ParagraphStyle(name='SX',parent=S['BodyText'],fontSize=8.05,leading=10.2)) def P(x,s='BX'): return Paragraph(x,S[s]) def B(xs): return [P('• '+x) for x in xs] def T(rows,widths): t=Table([[P(c,'SX') for c in r] for r in rows],colWidths=widths,repeatRows=1) t.setStyle(TableStyle([('BACKGROUND',(0,0),(-1,0),colors.HexColor('#D9ECF6')),('TEXTCOLOR',(0,0),(-1,0),colors.HexColor('#123E5A')),('FONTNAME',(0,0),(-1,0),'Helvetica-Bold'),('GRID',(0,0),(-1,-1),.35,colors.HexColor('#AFC6D3')),('VALIGN',(0,0),(-1,-1),'TOP'),('LEFTPADDING',(0,0),(-1,-1),5),('RIGHTPADDING',(0,0),(-1,-1),5),('TOPPADDING',(0,0),(-1,-1),4),('BOTTOMPADDING',(0,0),(-1,-1),4)])); return t def F(lines): return T([['<b>FLOWCHART / DIAGRAM TO DRAW</b>'],['<br/>'.join(lines)]],[16.2*cm]) class Num(canvas.Canvas): def __init__(self,*a,**kw): canvas.Canvas.__init__(self,*a,**kw);self.st=[] def showPage(self): self.st.append(dict(self.__dict__));self._startPage() def save(self): n=len(self.st) for st in self.st: self.__dict__.update(st);self.setFont('Helvetica',8);self.setFillColor(colors.HexColor('#596579'));self.drawString(1.55*cm,1.05*cm,'Nursing Biochemistry Exam Answers');self.drawRightString(A4[0]-1.55*cm,1.05*cm,f'Page {self._pageNumber} of {n}');canvas.Canvas.showPage(self) canvas.Canvas.save(self) def make(part, topics): st=[] for i,content in enumerate(topics): st+=content if i<len(topics)-1: st+=[PageBreak()] path=f'{base}/Nursing_Biochemistry_Exam_Answers_Part_{part}.pdf' SimpleDocTemplate(path,pagesize=A4,topMargin=1.45*cm,bottomMargin=1.6*cm,leftMargin=1.55*cm,rightMargin=1.55*cm,title=f'Nursing Biochemistry Exam Answers Part {part}').build(st,canvasmaker=Num) r=PdfReader(path);print(os.path.basename(path),len(r.pages),os.path.getsize(path)) # Part 2 p2=[] p2.append([P('6. Glucose Tolerance Test (GTT) and Diagnosis of Diabetes Mellitus','QX'),P('<b>Definition:</b> Oral glucose tolerance test (OGTT) measures the body response to a standard oral glucose load. It is used when diagnosis of diabetes is uncertain and in selected clinical situations.'),P('Procedure of 75-g OGTT','HX'),F(['Overnight fast for at least 8 hours -> fasting venous plasma glucose sample','Give 75 g anhydrous glucose dissolved in water within 5 minutes','Patient rests, avoids smoking/exercise -> collect plasma sample at 2 hours']),P('Interpretation and diagnostic criteria','HX'),T([['Test','Normal / prediabetes / diabetes'],['Fasting plasma glucose','Normal <100 mg/dL; prediabetes 100-125 mg/dL; diabetes >=126 mg/dL.'],['2-hour 75-g OGTT','Normal <140 mg/dL; impaired glucose tolerance 140-199 mg/dL; diabetes >=200 mg/dL.'],['HbA1c','Prediabetes 5.7-6.4%; diabetes >=6.5% using a standardized assay.'],['Random plasma glucose','>=200 mg/dL with classic symptoms of hyperglycemia or hyperglycemic crisis supports diagnosis.']],[4.2*cm,12*cm]),P('<b>Important:</b> In an asymptomatic person, an abnormal diagnostic test should usually be confirmed on another day using the same or another accepted test.','NX'),P('Precautions and nursing points','HX')]+B(['Ensure fasting state, correct glucose dose and accurate timing of sample.','Acute illness, severe stress, drugs and unusual activity can affect results.','Observe for nausea, vomiting or dizziness after glucose drink and document if test cannot be completed.','Educate patient: fasting means no food or caloric drinks, only water unless instructed otherwise.']) ) p2.append([P('7. Regulation of Blood pH and Buffer Systems','QX'),P('<b>Normal arterial pH:</b> 7.35-7.45. pH is maintained by buffers, lungs and kidneys. Even small changes in H+ concentration can disturb cellular function.'),P('Mechanisms of regulation','HX'),F(['1. Chemical buffers: immediate action','2. Respiratory regulation: minutes, controls CO2 by ventilation','3. Renal regulation: hours to days, excretes H+ and regenerates/reabsorbs HCO3-']),P('Major buffer systems','HX'),T([['Buffer','Main role'],['Bicarbonate buffer','H2CO3 / HCO3-. Most important extracellular buffer. Lungs regulate CO2; kidneys regulate HCO3-.'],['Phosphate buffer','H2PO4- / HPO4 2-. Important in cells and renal tubules.'],['Protein buffer','Plasma proteins and intracellular proteins accept or donate H+.'],['Hemoglobin buffer','Important in RBCs; deoxyhemoglobin buffers H+ produced from CO2.']],[4.3*cm,11.9*cm]),P('Henderson-Hasselbalch equation','HX'),P('pH = 6.1 + log [HCO3-] / (0.03 x PCO2). Thus pH depends on the ratio of bicarbonate (metabolic component) to carbon dioxide (respiratory component).'),P('<b>Nursing relevance:</b> Monitor respiratory rate, mental status, ABG values and serum electrolytes in critically ill patients. Report severe dyspnea, confusion, drowsiness, Kussmaul breathing or altered consciousness promptly.','NX')]) p2.append([P('8. Jaundice and Liver Function Tests (LFT)','QX'),P('<b>Definition:</b> Jaundice is yellow discoloration of sclera, skin and mucosa caused by increased serum bilirubin. It becomes clinically visible usually when bilirubin rises above about 2-3 mg/dL.'),P('Types of jaundice','HX'),T([['Type','Main features'],['Pre-hepatic / hemolytic','Excess RBC breakdown. Predominantly unconjugated bilirubin; urine bilirubin absent; urine urobilinogen increased.'],['Hepatic / hepatocellular','Liver-cell injury such as hepatitis. Mixed conjugated and unconjugated hyperbilirubinemia; AST/ALT often raised.'],['Post-hepatic / obstructive','Bile duct obstruction. Predominantly conjugated bilirubin; dark urine, pale stool, pruritus; ALP and GGT often markedly raised.']],[4.2*cm,12*cm]),P('Important LFT components','HX'),T([['Test','Meaning'],['Total/direct bilirubin','Assesses bilirubin production, conjugation and excretion. Direct bilirubin is conjugated bilirubin.'],['ALT and AST','Markers of hepatocellular injury. ALT is relatively more liver-specific.'],['ALP and GGT','Usually raised in cholestasis/biliary obstruction. GGT supports hepatobiliary source of raised ALP.'],['Albumin and PT/INR','Assess synthetic liver function. Low albumin or prolonged PT/INR may occur in significant chronic/severe dysfunction.']],[4.2*cm,12*cm]),P('<b>Nursing points:</b> Assess color of urine and stool, itching, bleeding tendency, abdominal pain and mental status. Review drugs and alcohol history. LFT must be interpreted with clinical findings, not in isolation.','NX')]) p2.append([P('9. Electrophoresis','QX'),P('<b>Definition:</b> Electrophoresis is separation of charged molecules in an electric field. Migration depends on net charge, size, shape, supporting medium and pH.'),P('Principle','HX'),F(['Sample placed on support medium -> electric current applied','Molecules migrate toward opposite charge -> bands separate','Bands are stained/quantified and interpreted']),P('Types','HX')]+B(['Paper electrophoresis, agarose gel electrophoresis, polyacrylamide gel electrophoresis and capillary electrophoresis.','Serum protein electrophoresis separates albumin, alpha-1, alpha-2, beta and gamma globulin fractions.'])+[P('Uses','HX')]+B(['Detection of monoclonal gammopathy and abnormal serum protein patterns.','Hemoglobin electrophoresis for hemoglobin variants.','Separation/analysis of DNA, RNA and proteins in laboratory practice.'])+[P('<b>Exam point:</b> At alkaline pH, serum proteins are negatively charged and migrate toward the anode. Albumin migrates fastest because of high negative charge.','NX')]) p2.append([P('10. ELISA (Enzyme-Linked Immunosorbent Assay)','QX'),P('<b>Definition:</b> ELISA is an immunoassay in which an enzyme-labelled antibody or antigen produces a measurable color change after addition of substrate.'),P('Principle','HX'),F(['Antigen or antibody fixed on microplate -> patient sample added','Specific antigen-antibody binding occurs -> wash away unbound material','Enzyme-labelled conjugate added -> substrate produces color','Color intensity measured by ELISA reader and is proportional to analyte']),P('Types','HX'),T([['Type','Key idea'],['Direct ELISA','Enzyme-labelled primary antibody detects antigen.'],['Indirect ELISA','Primary antibody from sample is detected by enzyme-labelled secondary antibody.'],['Sandwich ELISA','Antigen is captured between two antibodies; highly specific.'],['Competitive ELISA','Sample antigen competes with labelled antigen; more analyte often means less signal.']],[4.3*cm,11.9*cm]),P('Uses and limitations','HX')]+B(['Tests for antibodies or antigens in infections, hormones, cytokines and other analytes.','Useful for screening, but positive results may need confirmatory testing depending on disease/test protocol.','False results may occur due to cross-reactivity, poor timing of sample, technical error or interfering antibodies.'])+[P('<b>Nursing points:</b> Correct sample labeling, storage, timing and infection-control precautions are essential. Explain that screening result is interpreted by clinician with symptoms and other tests.','NX')]) make(2,p2) # part3 p3=[] p3.append([P('11. Overview of Carbohydrate Metabolism: Gluconeogenesis and Glycogenolysis','QX'),P('<b>Gluconeogenesis:</b> Formation of glucose from non-carbohydrate precursors, mainly in liver and to a lesser extent renal cortex during fasting.'),P('Precursors and key bypass enzymes','HX')]+B(['Precursors: lactate, glycerol, glucogenic amino acids and propionate.','Bypass enzymes: pyruvate carboxylase, phosphoenolpyruvate carboxykinase, fructose-1,6-bisphosphatase and glucose-6-phosphatase.','Stimulated by glucagon, cortisol and fasting; inhibited by insulin.'])+[P('<b>Glycogenolysis:</b> Breakdown of glycogen to glucose-1-phosphate by glycogen phosphorylase. In liver, free glucose is released into blood using glucose-6-phosphatase. Muscle lacks this enzyme and uses glucose-6-phosphate locally for energy.','BX'),F(['Fasting -> glucagon (liver) / epinephrine -> cAMP pathway','Activate glycogen phosphorylase -> glycogen -> G1P -> G6P','Liver: G6P -> free glucose -> blood | Muscle: G6P -> glycolysis']),P('<b>Clinical point:</b> Glycogenolysis maintains blood glucose early in fasting. Gluconeogenesis becomes increasingly important with prolonged fasting.','NX')]) p3.append([P('12. Regulation of Blood Glucose Level','QX'),P('<b>Normal fasting plasma glucose:</b> approximately 70-99 mg/dL. Regulation balances glucose entry, utilization, storage and production.'),P('Hormonal regulation','HX'),T([['Hormone','Main effect'],['Insulin','Decreases blood glucose: increases cellular glucose uptake in muscle/adipose, glycolysis and glycogenesis; decreases gluconeogenesis and glycogenolysis.'],['Glucagon','Increases blood glucose: stimulates hepatic glycogenolysis and gluconeogenesis during fasting.'],['Epinephrine','Rapidly increases glucose by glycogenolysis; also promotes lipolysis.'],['Cortisol and growth hormone','Counter-regulatory hormones; reduce glucose utilization and support gluconeogenesis during stress/fasting.']],[4.1*cm,12.1*cm]),P('States','HX'),F(['Fed state: insulin high -> glycolysis + glycogenesis + fat synthesis','Fasting state: glucagon high -> glycogenolysis then gluconeogenesis','Stress/exercise: catecholamines help provide rapid fuel']),P('<b>Nursing relevance:</b> Check glucose at prescribed times, recognize symptoms of hypo/hyperglycemia, and coordinate meal timing with insulin or glucose-lowering medicines.','NX')]) p3.append([P('13. Glycolysis','QX'),P('<b>Definition:</b> Glycolysis is conversion of glucose to pyruvate or lactate in the cytoplasm. It occurs in all cells and does not require oxygen directly.'),P('Key features','HX')]+B(['Site: cytosol. Anaerobic glycolysis produces lactate, especially in RBCs and hypoxic tissues.','Net yield per glucose: 2 ATP + 2 NADH + 2 pyruvate under aerobic conditions.','Irreversible regulatory enzymes: hexokinase/glucokinase, phosphofructokinase-1 (rate-limiting), pyruvate kinase.'])+[P('Sequence to draw','HX'),F(['Glucose -> G6P -> F6P -> F1,6-bisphosphate','-> glyceraldehyde-3-phosphate -> 1,3-BPG -> 3-PG -> 2-PG -> PEP','-> Pyruvate (aerobic) OR Lactate (anaerobic)']),P('Regulation and significance','HX')]+B(['PFK-1 is stimulated by AMP and fructose-2,6-bisphosphate, and inhibited by ATP and citrate.','Provides rapid ATP and intermediates for other pathways.','In oxygen deficiency, pyruvate becomes lactate to regenerate NAD+ for continued glycolysis.'])+[P('<b>Clinical point:</b> RBCs depend entirely on glycolysis for ATP because they have no mitochondria.','NX')]) p3.append([P('14. TCA Cycle (Citric Acid / Krebs Cycle)','QX'),P('<b>Definition:</b> TCA cycle oxidizes acetyl-CoA to CO2 in the mitochondrial matrix, producing NADH, FADH2 and GTP for ATP generation through oxidative phosphorylation.'),P('Steps to draw','HX'),F(['Acetyl-CoA + Oxaloacetate -> Citrate -> Isocitrate -> alpha-ketoglutarate','-> Succinyl-CoA -> Succinate -> Fumarate -> Malate -> Oxaloacetate']),P('Yield per acetyl-CoA','HX'),T([['Product','Number'],['NADH','3'],['FADH2','1'],['GTP','1'],['CO2','2'],['Approximate ATP equivalent','10 ATP per acetyl-CoA after oxidative phosphorylation']],[7*cm,9.2*cm]),P('Regulation','HX')]+B(['Important regulatory enzymes: citrate synthase, isocitrate dehydrogenase and alpha-ketoglutarate dehydrogenase.','High ATP and NADH inhibit the cycle; ADP and Ca2+ promote activity in appropriate tissues.'])+[P('<b>Importance:</b> It is the final common oxidative pathway for carbohydrate, fat and amino-acid metabolism and supplies intermediates for biosynthesis.','NX')]) p3.append([P('15. Lipoproteins: HDL and LDL','QX'),P('<b>Definition:</b> Lipoproteins are complexes of lipids and apolipoproteins that transport hydrophobic lipids in blood.'),P('Comparison','HX'),T([['Feature','LDL','HDL'],['Major role','Delivers cholesterol from liver to peripheral tissues.','Removes excess cholesterol from tissues to liver: reverse cholesterol transport.'],['Main apolipoprotein','ApoB-100','ApoA-I'],['Clinical effect','High LDL promotes cholesterol deposition in arterial wall and atherosclerosis.','Higher HDL is associated with reverse cholesterol transport, but clinical risk is not judged by HDL alone.'],['Exam term','“Bad cholesterol”','“Good cholesterol”']],[3.1*cm,6.55*cm,6.55*cm]),P('Other lipoproteins','HX')]+B(['Chylomicrons carry dietary triglycerides from intestine.','VLDL carries endogenous triglycerides from liver. IDL is a VLDL remnant.'])+[P('<b>Nursing relevance:</b> Promote prescribed lipid testing, diet pattern, exercise, smoking cessation, diabetes/BP control and adherence to lipid-lowering medicines. Cardiovascular risk is based on the full clinical profile.','NX')]) make(3,p3) # part4 p4=[] p4.append([P('16. Ketosis and Ketone Bodies','QX'),P('<b>Definition:</b> Ketone bodies are water-soluble fuels produced in liver mitochondria from excess acetyl-CoA, mainly during fasting, starvation, prolonged exercise or uncontrolled diabetes.'),P('Types and formation','HX'),F(['Fatty acids -> beta-oxidation -> acetyl-CoA','2 acetyl-CoA -> acetoacetate -> beta-hydroxybutyrate + acetone','Ketone bodies enter blood -> used by muscle, heart and brain during prolonged fasting']),P('Key facts','HX')]+B(['Three ketone bodies: acetoacetate, beta-hydroxybutyrate and acetone.','Liver synthesizes ketone bodies but cannot utilize them because it lacks thiophorase (succinyl-CoA:acetoacetate CoA transferase).','RBCs cannot use ketone bodies because they have no mitochondria.','Excess ketones can lead to metabolic acidosis, especially diabetic ketoacidosis.'])+[P('<b>Nursing alert:</b> In diabetes with nausea, vomiting, abdominal pain, deep rapid breathing, dehydration or confusion, check ketones/glucose as ordered and urgently report suspected DKA.','NX')]) p4.append([P('17. Antioxidants','QX'),P('<b>Definition:</b> Antioxidants prevent or reduce damage caused by reactive oxygen species (free radicals) by neutralizing them or limiting their formation.'),P('Types','HX'),T([['Type','Examples / role'],['Enzymatic','Superoxide dismutase, catalase, glutathione peroxidase.'],['Non-enzymatic endogenous','Glutathione, uric acid, bilirubin, coenzyme Q.'],['Dietary','Vitamin C, vitamin E, carotenoids, selenium, zinc and plant polyphenols.']],[4.5*cm,11.7*cm]),P('Functions and importance','HX')]+B(['Protect cell membrane lipids, proteins and DNA from oxidative injury.','Limit lipid peroxidation and oxidative modification of LDL.','Oxidative stress contributes to aging and diseases such as atherosclerosis; antioxidant systems work as a network.'])+[P('<b>Exam caution:</b> A balanced diet rich in fruits, vegetables, nuts and whole foods is preferred. High-dose supplements are not automatically beneficial and should be used only when clinically indicated.','NX')]) p4.append([P('18. Importance of Biochemistry in Nursing','QX'),P('Biochemistry connects basic science with patient assessment, investigations, nutrition, pharmacology and clinical decision-making.','BX'),P('Major applications','HX')]+B(['Interpretation of blood glucose, HbA1c, electrolytes, ABG, renal profile, LFT, lipid profile and cardiac markers.','Understanding diabetes, jaundice, renal disease, acid-base disorders, malnutrition and metabolic emergencies.','Planning diet and enteral/parenteral nutrition; recognizing protein-energy malnutrition and dehydration.','Safe medication administration: insulin, electrolytes, IV fluids and drugs with hepatic/renal effects.','Specimen collection, correct labeling, timing, storage and prevention of pre-analytical errors.','Patient education on diet, fasting tests, hypoglycemia prevention and medicine adherence.'])+[P('<b>Conclusion:</b> Biochemistry improves accurate observation, early recognition of abnormal results, evidence-based nursing care and timely referral.','NX')]) p4.append([P('19. Cell Membrane: Fluid Mosaic Model and Transport','QX'),P('<b>Fluid mosaic model:</b> Cell membrane is a dynamic phospholipid bilayer with proteins, cholesterol and carbohydrates arranged like a mosaic. It is selectively permeable.'),P('Components','HX'),T([['Component','Function'],['Phospholipid bilayer','Hydrophilic heads face water; hydrophobic tails face inward. Forms basic barrier.'],['Proteins','Channels, carriers, pumps, receptors, enzymes and adhesion molecules.'],['Cholesterol','Stabilizes membrane and modifies fluidity.'],['Carbohydrates','Glycoproteins/glycolipids form glycocalyx for recognition and cell interaction.']],[4.5*cm,11.7*cm]),P('Transport mechanisms','HX'),T([['Mechanism','Example'],['Simple diffusion','O2 and CO2 move down concentration gradient.'],['Facilitated diffusion','Glucose transport through carrier proteins, down gradient, no ATP directly.'],['Osmosis','Water movement through semipermeable membrane toward higher solute concentration.'],['Active transport','Na+/K+ ATPase moves Na+ out and K+ in against gradients using ATP.'],['Secondary active transport','Na+-glucose cotransport uses Na+ gradient.'],['Vesicular transport','Endocytosis, phagocytosis, pinocytosis and exocytosis.']],[4.5*cm,11.7*cm]),P('<b>Nursing relevance:</b> Osmosis and diffusion explain edema, dehydration, IV fluid effects, electrolyte balance and drug movement.','NX')]) p4.append([P('20. Metabolic Acidosis and Respiratory Acidosis','QX'),P('<b>Acidosis:</b> arterial pH below 7.35. It may be metabolic due to low bicarbonate or respiratory due to high CO2.'),P('Comparison','HX'),T([['Feature','Metabolic acidosis','Respiratory acidosis'],['Primary abnormality','HCO3- decreases','PCO2 increases due to hypoventilation'],['Common causes','DKA, lactic acidosis, renal failure, diarrhea, toxins.','COPD exacerbation, respiratory depression, airway/neuromuscular disease.'],['Compensation','Lungs lower PCO2 by hyperventilation.','Kidneys retain HCO3- and excrete H+; compensation is slower.'],['ABG pattern','Low pH, low HCO3-, low PCO2 if compensated.','Low pH, high PCO2, high HCO3- if compensated.']],[3.1*cm,6.55*cm,6.55*cm]),P('Clinical signs and nursing points','HX')]+B(['Metabolic acidosis may show deep rapid Kussmaul breathing, nausea, weakness and confusion.','Respiratory acidosis may show headache, drowsiness, confusion and hypoventilation.','Assess airway, breathing, circulation, respiratory pattern, oxygen saturation, mental status, ABG and electrolytes.','Treat underlying cause as per medical order. Do not give bicarbonate or oxygen outside protocol/prescription.'])+[P('<b>Red flag:</b> Altered consciousness, severe breathlessness, shock, suspected DKA or severe sepsis requires urgent escalation.','NX')]) make(4,p4) #part5 p5=[] p5.append([P('21. Enzymes: Definition and Important Properties','QX'),P('<b>Definition:</b> Enzymes are biological catalysts, mostly proteins, that increase the rate of biochemical reactions without being consumed. Some RNA molecules also have catalytic activity.'),P('Properties','HX')]+B(['Have active site and show substrate specificity.','Lower activation energy but do not change equilibrium or delta G of reaction.','Affected by temperature, pH, substrate concentration, enzyme concentration, inhibitors and cofactors.','Many enzymes require cofactors: metal ions or organic coenzymes. Apoenzyme + cofactor = holoenzyme.'])+[P('Classification','HX'),T([['Class','Action / example'],['Oxidoreductases','Oxidation-reduction reactions, e.g., dehydrogenases.'],['Transferases','Transfer functional groups, e.g., aminotransferases.'],['Hydrolases','Hydrolytic reactions, e.g., lipase.'],['Lyases','Addition/removal to form double bond, e.g., aldolase.'],['Isomerases','Isomerization reactions.'],['Ligases','Join two molecules using ATP, e.g., DNA ligase.']],[4.5*cm,11.7*cm]),P('<b>Clinical importance:</b> Serum enzyme measurements such as ALT, AST, ALP, amylase and CK can aid diagnosis but must be interpreted in clinical context.','NX')]) p5.append([P('22. Essential Fatty Acids (EFA) and PUFA','QX'),P('<b>Definition:</b> Essential fatty acids cannot be synthesized by humans and must be obtained from diet. The main EFAs are linoleic acid (omega-6) and alpha-linolenic acid (omega-3).'),P('Functions','HX')]+B(['Structural components of cell membrane phospholipids.','Precursors of eicosanoids involved in inflammation, vascular tone and platelet function.','Required for normal growth, skin integrity, brain and retinal development.','PUFAs include omega-3 and omega-6 fatty acids. Arachidonic acid is conditionally essential in some circumstances.'])+[P('Sources and deficiency','HX'),T([['Item','Examples'],['Sources','Vegetable oils, nuts, seeds, soybean, flaxseed, walnuts and oily fish for omega-3 fatty acids.'],['Deficiency','Dry scaly dermatitis, poor growth, poor wound healing, thrombocytopenia and increased susceptibility to infection in severe deficiency.']],[4.5*cm,11.7*cm]),P('<b>Nursing point:</b> Encourage balanced dietary fat sources and follow individualized diet advice, especially in malnutrition, malabsorption or parenteral nutrition.','NX')]) p5.append([P('23. Beta-Oxidation of Fatty Acids','QX'),P('<b>Definition:</b> Beta-oxidation is mitochondrial breakdown of fatty acyl-CoA into acetyl-CoA units, producing NADH and FADH2 for energy.'),P('Steps','HX'),F(['Activation: fatty acid + CoA -> fatty acyl-CoA (uses ATP)','Transport: long-chain acyl-CoA enters mitochondria through carnitine shuttle','Repeated beta-oxidation: oxidation -> hydration -> oxidation -> thiolysis','Each cycle releases acetyl-CoA and shortens fatty acid by 2 carbons']),P('Palmitate example','HX')]+B(['Palmitate (C16) undergoes 7 cycles to form 8 acetyl-CoA, 7 NADH and 7 FADH2.','Net energy yield is approximately 106 ATP after subtracting activation cost.'])+[P('Regulation and clinical note','HX')]+B(['Carnitine palmitoyltransferase-I is inhibited by malonyl-CoA, preventing simultaneous fat synthesis and oxidation.','Defects in carnitine transport or fatty-acid oxidation can cause hypoketotic hypoglycemia, especially during fasting.'])+[P('<b>Exam point:</b> Very-long-chain fatty acids are initially shortened in peroxisomes.','NX')]) p5.append([P('24. Atherosclerosis','QX'),P('<b>Definition:</b> Atherosclerosis is a chronic inflammatory disease of medium and large arteries characterized by intimal lipid deposition, inflammation, fibrous plaque formation and possible thrombosis.'),P('Pathogenesis to draw','HX'),F(['Endothelial dysfunction/injury -> LDL enters intima and becomes modified/oxidized','Monocytes enter -> macrophages ingest lipid -> foam cells -> fatty streak','Smooth-muscle migration + collagen -> fibrous plaque','Plaque rupture/erosion -> thrombus -> myocardial infarction or stroke']),P('Risk factors','HX'),T([['Non-modifiable','Modifiable'],['Age, male sex, family history/genetic predisposition.','High LDL, diabetes, hypertension, smoking, obesity, physical inactivity, unhealthy diet and chronic kidney disease.']],[8.1*cm,8.1*cm]),P('Prevention and nursing role','HX')]+B(['Support smoking cessation, BP/glucose control, physical activity and heart-healthy dietary pattern.','Promote adherence to statin/other prescribed medicines and regular lipid follow-up.','Teach warning signs of acute coronary syndrome and stroke and need for emergency care.'])+[P('<b>Key link:</b> LDL is causal in plaque formation. Oxidative stress and inflammation contribute to disease progression.','NX')]) p5.append([P('25. Hypoglycemia','QX'),P('<b>Definition:</b> Hypoglycemia is low blood glucose. In diabetes care, blood glucose below 70 mg/dL (3.9 mmol/L) is an alert value. Severe hypoglycemia is defined clinically by altered mental/physical status requiring assistance.'),P('Causes','HX')]+B(['Excess insulin or insulin secretagogue dose, missed/delayed meal, excess exercise, alcohol, vomiting, renal/hepatic dysfunction or drug interactions.','Less common non-diabetic causes include prolonged fasting, critical illness, hormone deficiency and endogenous hyperinsulinism.'])+[P('Symptoms','HX'),T([['Autonomic / adrenergic','Neuroglycopenic'],['Sweating, tremor, palpitations, hunger, anxiety.','Confusion, behavior change, blurred vision, weakness, seizure, loss of consciousness.']],[8.1*cm,8.1*cm]),P('Immediate management','HX'),F(['If conscious and able to swallow: give 15-20 g fast-acting carbohydrate','Recheck glucose after 15 minutes; repeat if still low','Then take meal/snack containing longer-acting carbohydrate if next meal is not soon','If unconscious/seizing/unable to swallow: emergency care, glucagon or IV dextrose by trained personnel/protocol']),P('<b>Nursing points:</b> Never give oral food or drink to a patient with reduced consciousness or unsafe swallow. Document episode, identify cause, notify prescriber as required and reinforce prevention education.','NX')]) make(5,p5) PY

python - <<'PY' from pypdf import PdfReader import os base='/tmp/workspace/nursing-biochemistry-notes/output' for n in range(1,6): p=f'{base}/Nursing_Biochemistry_Exam_Answers_Part_{n}.pdf' r=PdfReader(p) text=''.join(pg.extract_text() or '' for pg in r.pages) print(n, 'exists=',os.path.exists(p),'pages=',len(r.pages),'chars=',len(text),'has_topic=',('NURSING' in text if n==1 else '1.' in text)) PY