  
{"id":18849,"date":"2026-05-12T10:33:30","date_gmt":"2026-05-12T10:33:30","guid":{"rendered":"https:\/\/www.diginerve.com\/blogs\/?p=18849"},"modified":"2026-05-12T10:33:30","modified_gmt":"2026-05-12T10:33:30","slug":"important-biochemistry-questions-for-neet-pg","status":"publish","type":"post","link":"https:\/\/www.diginerve.com\/blogs\/important-biochemistry-questions-for-neet-pg\/","title":{"rendered":"Important Questions and Answers on Biochemistry for NEET PG 2026"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">NBEMS has listed NEET-PG 2026 tentatively on 30-08-2026, and says the exact dates will be confirmed in the Information Bulletin; candidates are advised to keep checking the official NBEMS website for the bulletin and application forms. <\/span><span style=\"font-weight: 400;\">For question practice, use the latest full NEET-PG scheme as the pattern anchor: CBT, single-best MCQs, 200 questions, English only, 3 hours 30 minutes, +4 for correct, \u22121 for incorrect, 0 for unattempted, and time-bound sections of 40 questions each were described in the 2025 bulletin.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">These are original NEET-PG-style practice questions, not reproduced past-paper questions.<\/span><\/p>\n<h2><b>Core NEET-PG Pattern MCQs: Biochemistry<\/b><\/h2>\n<p><b>Q1. A patient taking isoniazid develops seizures. Which coenzyme deficiency explains this?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. FAD<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Pyridoxal phosphate<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. NAD<\/span><span style=\"font-weight: 400;\">\u207a<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Tetrahydrofolate<\/span><\/p>\n<p><b>Answer: B. Pyridoxal phosphate<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">INH causes vitamin B6 deficiency. PLP is needed for glutamate decarboxylase, which forms GABA.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q2. Wernicke encephalopathy is due to a deficiency of the cofactor required for:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Pyruvate carboxylase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Transketolase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Glutathione reductase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Xanthine oxidase<\/span><\/p>\n<p><b>Answer: B. Transketolase<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Thiamine pyrophosphate is the cofactor for transketolase, pyruvate dehydrogenase, \u03b1-ketoglutarate dehydrogenase, and branched-chain \u03b1-ketoacid dehydrogenase.<\/span><\/p>\n<p><strong>Read More\u00a0 &#8211; <a href=\"https:\/\/www.diginerve.com\/blogs\/important-physiology-questions-for-neet-pg\/\">Important Physiology Questions for NEET PG 2026<\/a><br \/>\n<\/strong><\/p>\n<p><b>Q3. An infant has vomiting, jaundice, hepatomegaly, cataract, and <\/b><b><i>E. coli<\/i><\/b><b> sepsis after milk feeding. Deficient enzyme?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Galactokinase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Galactose-1-phosphate uridyltransferase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Aldolase B<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Fructokinase<\/span><\/p>\n<p><b>Answer: B. Galactose-1-phosphate uridyltransferase<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Classic galactosemia causes cataracts, liver dysfunction, and sepsis after lactose intake.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q4. A child develops severe hypoglycemia, vomiting, and liver failure after drinking fruit juice. Which enzyme is deficient?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Fructokinase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Aldolase B<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Glucose-6-phosphatase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Galactokinase<\/span><\/p>\n<p><b>Answer: B. Aldolase B<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Hereditary fructose intolerance causes the accumulation of fructose-1-phosphate, trapping phosphate and causing hypoglycemia.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q5. A fasting child has hypoketotic hypoglycemia and dicarboxylic aciduria. Diagnosis?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. MCAD deficiency<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Von Gierke disease<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Pompe disease<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Carnitine excess<\/span><\/p>\n<p><b>Answer: A. MCAD deficiency<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Medium-chain acyl-CoA dehydrogenase deficiency impairs \u03b2-oxidation, causing low ketones during fasting.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q6. The rate-limiting enzyme of glycolysis is:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Hexokinase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Phosphofructokinase-1<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Pyruvate kinase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Glucokinase<\/span><\/p>\n<p><b>Answer: B. Phosphofructokinase-1<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">PFK-1 is activated by AMP and fructose-2,6-bisphosphate; inhibited by ATP and citrate.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q7. Glucagon decreases glycolysis in liver mainly by lowering:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Fructose-1,6-bisphosphate<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Fructose-2,6-bisphosphate<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Glucose-6-phosphate<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Pyruvate<\/span><\/p>\n<p><b>Answer: B. Fructose-2,6-bisphosphate<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Glucagon activates PKA, which activates fructose-2,6-bisphosphatase activity of PFK-2\/FBPase-2.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q8. A child has lactic acidosis, neurologic symptoms, and increased alanine. Defect?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Pyruvate dehydrogenase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Pyruvate carboxylase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Lactate dehydrogenase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Glucose-6-phosphatase<\/span><\/p>\n<p><b>Answer: A. Pyruvate dehydrogenase<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">PDH deficiency diverts pyruvate to lactate and alanine. Treatment may include a ketogenic diet and a thiamine trial.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q9. Arsenic poisoning mainly affects enzymes requiring:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Biotin<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Lipoic acid<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Vitamin K<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Cobalamin<\/span><\/p>\n<p><b>Answer: B. Lipoic acid<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Arsenic inhibits lipoic-acid-dependent enzyme complexes like PDH and \u03b1-ketoglutarate dehydrogenase.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q10. Pyruvate carboxylase requires which vitamin-derived coenzyme?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Biotin<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Riboflavin<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Niacin<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Folate<\/span><\/p>\n<p><b>Answer: A. Biotin<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Biotin is required for carboxylation reactions: pyruvate carboxylase, acetyl-CoA carboxylase, and propionyl-CoA carboxylase.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q11. A neonate has hyperammonemia and high orotic acid without megaloblastic anaemia. Diagnosis?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. CPS-I deficiency<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. OTC deficiency<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. UMP synthase deficiency<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. HGPRT deficiency<\/span><\/p>\n<p><b>Answer: B. OTC deficiency<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Ornithine transcarbamylase deficiency causes carbamoyl phosphate accumulation, which enters pyrimidine synthesis, increasing orotic acid.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q12. Hyperammonemia with low orotic acid suggests deficiency of:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Ornithine transcarbamylase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Carbamoyl phosphate synthetase I<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. UMP synthase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Argininosuccinate lyase<\/span><\/p>\n<p><b>Answer: B. Carbamoyl phosphate synthetase I<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">CPS-I deficiency causes severe hyperammonemia but does not increase orotic acid.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q12. N-acetylglutamate activates:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. CPS-I<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. CPS-II<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. OTC<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Arginase<\/span><\/p>\n<p><b>Answer: A. CPS-I<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">CPS-I is the first committed enzyme of the urea cycle and requires N-acetylglutamate.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q13. A child has intellectual disability, musty body odour, fair skin, and eczema. Enzyme-deficient?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Tyrosinase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Phenylalanine hydroxylase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Homogentisate oxidase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Cystathionine \u03b2-synthase<\/span><\/p>\n<p><b>Answer: B. Phenylalanine hydroxylase<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Classic PKU causes increased phenylalanine and decreased tyrosine.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q14. Maple syrup urine disease is due to a deficiency of:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Branched-chain \u03b1-ketoacid dehydrogenase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Phenylalanine hydroxylase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Homogentisate oxidase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Propionyl-CoA carboxylase<\/span><\/p>\n<p><b>Answer: A. Branched-chain \u03b1-ketoacid dehydrogenase<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Increased leucine, isoleucine, and valine cause sweet-smelling urine and neurologic symptoms.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q15. A patient has lens subluxation, marfanoid habitus, osteoporosis, and thrombosis. Most likely enzyme deficiency?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Cystathionine \u03b2-synthase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Homogentisate oxidase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Tyrosinase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Histidase<\/span><\/p>\n<p><b>Answer: A. Cystathionine \u03b2-synthase<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Homocystinuria causes thromboembolism and downward\/inward lens dislocation.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q16. Megaloblastic anaemia with increased orotic acid but normal ammonia is due to:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. OTC deficiency<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. UMP synthase deficiency<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. CPS-I deficiency<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Dihydrofolate reductase deficiency<\/span><\/p>\n<p><b>Answer: B. UMP synthase deficiency<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Hereditary orotic aciduria is treated with uridine.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q17. Self-mutilation, chorea, and hyperuricemia suggest a deficiency of:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Adenosine deaminase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. HGPRT<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Xanthine oxidase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. PRPP synthetase<\/span><\/p>\n<p><b>Answer: B. HGPRT<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Lesch-Nyhan syndrome is X-linked and causes a purine salvage defect.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q18. Allopurinol inhibits:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. HGPRT<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. Xanthine oxidase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Adenosine deaminase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Ribonucleotide reductase<\/span><\/p>\n<p><b>Answer: B. Xanthine oxidase<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">It reduces uric acid formation from hypoxanthine and xanthine.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Q19. Primaquine-induced hemolysis with bite cells is classically due to a deficiency of:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A. Pyruvate kinase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">B. G6PD<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">C. Hexokinase<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">D. Aldolase<\/span><\/p>\n<p><b>Answer: B. G6PD<\/b><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">G6PD deficiency decreases NADPH, reducing glutathione regeneration and causing oxidative hemolysis.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><strong>Last-Minute High-Yield Biochemistry One-Liners<\/strong><\/h2>\n<table style=\"width: 98.2101%;\">\n<tbody>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><b>Topic<\/b><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><b>Must-know answer<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">G6PD function<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">NADPH production in the HMP shunt<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Thiamine enzymes<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">PDH, \u03b1-KGDH, BCKD, transketolase<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Biotin enzymes<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Carboxylases<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">B12 marker<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Methylmalonic acid \u2191<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Folate marker<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Homocysteine \u2191, MMA normal<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">OTC deficiency<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Hyperammonemia + orotic acid \u2191<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">UMP synthase deficiency<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Orotic acid \u2191 + megaloblastic anemia + normal ammonia<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">MCAD deficiency<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Hypoketotic hypoglycemia<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Von Gierke<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">G6Pase deficiency<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">McArdle<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Muscle glycogen phosphorylase deficiency<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Pompe<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Lysosomal acid \u03b1-glucosidase deficiency<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">PKU<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Phenylalanine hydroxylase deficiency<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">MSUD<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">BCKD deficiency<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Alkaptonuria<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Homogentisate oxidase deficiency<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Homocystinuria<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">CBS deficiency; thrombosis<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Lesch-Nyhan<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">HGPRT deficiency<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">AIP<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Porphobilinogen deaminase deficiency<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Lead poisoning<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">ALA dehydratase + ferrochelatase inhibition<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Apo C-II<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Activates LPL<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Apo E<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Remnant uptake<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Apo B100<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">LDL receptor binding<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Southern blot<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">DNA<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Northern blot<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">RNA<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Western blot<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Protein<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Sanger sequencing<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">ddNTP chain termination<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Competitive inhibition<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Km \u2191, Vmax same<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Noncompetitive inhibition<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Vmax \u2193, Km same<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Uncompetitive inhibition<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Km \u2193, Vmax \u2193<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Vitamin C<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Collagen hydroxylation<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Vitamin K<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">\u03b3-carboxylation of clotting factors<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Vitamin A<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Vision + epithelial differentiation<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Vitamin D<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Calcium\/phosphate homeostasis<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Statins<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">HMG-CoA reductase inhibitors<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.675%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Liver cannot use ketones<\/span><\/td>\n<td style=\"width: 139.303%; text-align: center; border-style: solid; border-color: #000000;\"><span style=\"font-weight: 400;\">Lacks thiophorase<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Suggested practice mode:<\/b><span style=\"font-weight: 400;\"> attempt the 50 MCQs in 45 minutes, then spend another 45 minutes only on explanations and wrong-answer notes.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>NBEMS has listed NEET-PG 2026 tentatively on 30-08-2026, and says [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":18850,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[123],"tags":[975,976],"class_list":["post-18849","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-neet-pg","tag-biochemistry-neet-pg","tag-neet-pg-biochemistry-questions"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Important Questions and Answers on Biochemistry for NEET PG 2026 - Your Guide At Every Step to Become The Top Doctor<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.diginerve.com\/blogs\/important-biochemistry-questions-for-neet-pg\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta 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