Preparing for Biochemistry for NEET PG 2026 requires a smart, focused revision plan. The subject includes metabolic pathways, molecular biology, genetics, enzymes, vitamins, clinical disorders, and laboratory-based concepts. Although Biochemistry may seem memory-heavy, it becomes easier to score when revised using high-yield tables, flowcharts, MCQs, PYQs, and clinical correlations.

Biochemistry questions in NEET PG are usually concept-based, clinical, and integrated with Medicine, Pediatrics, Pathology, Pharmacology, and Genetics. Instead of reading lengthy theory repeatedly, aspirants should focus on important pathways, enzyme deficiencies, inherited metabolic disorders, vitamins, molecular biology techniques, and frequently repeated PYQ areas.

This blog follows the recommended rapid revision structure for NEET PG subject-wise articles and is adapted for Biochemistry.

Important Topics Weightage in Biochemistry for NEET PG

Biochemistry in NEET PG generally includes questions from metabolism, molecular biology, genetics, enzymes, vitamins, nutrition, and clinical biochemistry. Certain areas are repeatedly tested and should be prioritised during rapid revision.

High-Yield Biochemistry Topics for NEET PG 2026

During the final phase of NEET PG preparation, it is important to revise the most scoring topics first. These topics are commonly asked directly, through clinical vignettes, or as integrated questions.

1. Carbohydrate Metabolism

Carbohydrate metabolism is one of the most important areas in Biochemistry for NEET PG. Focus on:

• Glycolysis
• Gluconeogenesis
• Glycogenesis
• Glycogenolysis
• HMP shunt
• TCA cycle
• Electron transport chain
• Glycogen storage diseases
• Galactose metabolism
• Fructose metabolism
• Diabetes-related biochemical changes
• Rate-limiting enzymes of major pathways

2. Lipid Metabolism

Lipid metabolism is frequently asked about because of its strong clinical correlation with cardiovascular diseases, obesity, diabetes, and metabolic syndrome. Important topics include:

• Fatty acid oxidation
• Fatty acid synthesis
• Ketone body metabolism
• Cholesterol synthesis
• Lipoprotein metabolism
• Apolipoproteins
• Hyperlipoproteinemias
• Essential fatty acids
• Prostaglandins and eicosanoids
• Sphingolipidoses
• Fatty liver

3. Amino Acid Metabolism

Amino acid metabolism questions are commonly linked to inborn errors of metabolism. Revise:

• Phenylketonuria
• Alkaptonuria
• Maple syrup urine disease
• Homocystinuria
• Tyrosinemia
• Hartnup disease
• Urea cycle disorders
• Transamination and deamination
• Glucogenic and ketogenic amino acids
• One-carbon metabolism
• Creatine metabolism

4. Molecular Biology

Molecular biology is a high-yield and frequently repeated section in NEET PG. Focus on:

• DNA replication
• Transcription
• Translation
• DNA repair mechanisms
• PCR
• Southern blotting
• Northern blotting
• Western blotting
• ELISA
• Recombinant DNA technology
• Gene therapy basics
• Restriction enzymes
• CRISPR basics
• Regulation of gene expression

5. Genetics

Genetics is important because NEET PG questions often test inheritance patterns and clinical syndromes. Important topics include:

• Autosomal dominant inheritance
• Autosomal recessive inheritance
• X-linked recessive inheritance
• Mitochondrial inheritance
• Trinucleotide repeat disorders
• Hardy-Weinberg principle
• Pedigree analysis
• Chromosomal abnormalities
• Down syndrome
• Turner syndrome
• Klinefelter syndrome
• Genomic imprinting
• Anticipation

6. Vitamins and Minerals

Vitamins are extremely high-yield for rapid revision because questions are often direct and clinically oriented. Focus on:

• Fat-soluble vitamins: A, D, E, K
• Water-soluble vitamins: B-complex and vitamin C
• Vitamin deficiency diseases
• Vitamin toxicity
• Coenzyme forms of vitamins
• Minerals and trace elements
• Iron metabolism
• Calcium and phosphate metabolism
• Zinc, copper, selenium, iodine
• Antioxidant vitamins

7. Enzymes

Enzymology is a core topic in Biochemistry. Revise:

• Michaelis-Menten equation
• Km and Vmax
• Competitive inhibition
• Non-competitive inhibition
• Uncompetitive inhibition
• Enzyme classification
• Diagnostic enzymes
• Isoenzymes
• Regulation of enzyme activity
• Rate-limiting enzymes

8. Heme Metabolism

Heme metabolism is frequently integrated with Medicine and Pathology. Important areas include:

• Heme synthesis
• Porphyrias
• Heme degradation
• Bilirubin metabolism
• Types of jaundice
• Hemoglobin structure
• Hemoglobinopathies
• Methemoglobinemia

9. Nutrition

Nutrition is a scoring area when revised through tables. Focus on:

• Protein-energy malnutrition
• Kwashiorkor
• Marasmus
• Essential amino acids
• Nitrogen balance
• Balanced diet
• BMI
• Glycemic index
• Dietary fiber
• Recommended dietary allowances
• Starvation metabolism

Must-Remember Tables for Biochemistry Rapid Revision

Tables are extremely useful for last-minute Biochemistry revision because they help you compare enzymes, disorders, vitamins, and metabolic pathways quickly.

Rate-Limiting Enzymes of Important Pathways

Vitamins: Deficiency Disorders

Inborn Errors of Metabolism

Lipoproteins and Apolipoproteins

Image-Based Questions in Biochemistry for NEET PG

Image-based Biochemistry questions may include charts, graphs, pathways, lab reports, electrophoresis patterns, and molecular biology techniques. Students should revise pathway diagrams and commonly tested visual patterns.

Important image-based areas include:

• Michaelis-Menten curve
• Lineweaver-Burk plot
• Competitive and non-competitive inhibition graphs
• DNA replication diagrams
• PCR cycle diagram
• Blotting techniques
• Electrophoresis patterns
• Pedigree charts
• Metabolic pathway charts
• Urea cycle diagram
• Heme synthesis pathway
• Jaundice lab patterns
• Lipoprotein metabolism chart
• Vitamin deficiency images
• Graphs related to enzyme kinetics

For image-based questions, do not simply memorise the diagram. Understand what each label, curve, enzyme, or pattern represents.

Previous Year Questions Trend in Biochemistry

Previous year questions show that NEET PG often tests Biochemistry through clinical scenarios and integrated concepts. The trend is moving toward molecular biology, genetics, enzyme deficiencies, metabolic disorders, and clinical biochemistry.

Common PYQ trends include:

• Rate-limiting enzymes
• Glycogen storage diseases
• Galactosemia and fructose intolerance
• Urea cycle defects
• Phenylketonuria
• Maple syrup urine disease
• Vitamins and coenzymes
• Vitamin deficiency diseases
• Enzyme kinetics
• Competitive inhibition
• Lipoproteins and apolipoproteins
• Hyperlipoproteinemias
• PCR and blotting techniques
• DNA repair defects
• Inheritance patterns
• Bilirubin metabolism and jaundice
• Porphyrias
• Hemoglobinopathies

Important MCQs in Biochemistry

Q1. What is the rate-limiting enzyme of glycolysis?

A. Hexokinase
B. Phosphofructokinase-1
C. Pyruvate kinase
D. Glucokinase

Answer: B. Phosphofructokinase-1

Phosphofructokinase-1 is the rate-limiting enzyme of glycolysis and is one of the most commonly tested enzymes in carbohydrate metabolism.

Q2. Which vitamin deficiency causes pellagra?

A. Vitamin B1
B. Vitamin B2
C. Vitamin B3
D. Vitamin B6

Answer: C. Vitamin B3

Niacin deficiency causes pellagra, which is classically associated with dermatitis, diarrhoea, dementia, and death.

Q3. Maple syrup urine disease is due to a deficiency of which enzyme?

A. Phenylalanine hydroxylase
B. Branched-chain alpha-ketoacid dehydrogenase
C. Homogentisate oxidase
D. Galactose-1-phosphate uridyltransferase

Answer: B. Branched-chain alpha-ketoacid dehydrogenase

Maple syrup urine disease is caused by defective metabolism of branched-chain amino acids due to deficiency of branched-chain alpha-ketoacid dehydrogenase.

Q4. Which apolipoprotein activates lipoprotein lipase?

A. Apo A-I
B. Apo B-48
C. Apo C-II
D. Apo E

Answer: C. Apo C-II

Apo C-II activates lipoprotein lipase, which helps in the breakdown of triglycerides present in chylomicrons and VLDL.

Q5. Southern blotting is used to detect which molecule?

A. DNA
B. RNA
C. Protein
D. Lipid

Answer: A. DNA

Southern blotting is used to detect DNA. Northern blotting detects RNA, and Western blotting detects proteins.

Rapid Revision Notes for NEET PG 2026 Biochemistry

Here are some high-yield rapid revision points for NEET PG Biochemistry:

• Phosphofructokinase-1 is the rate-limiting enzyme of glycolysis.
• HMG-CoA reductase is the rate-limiting enzyme of cholesterol synthesis.
• Glucose-6-phosphate dehydrogenase is the rate-limiting enzyme of the HMP shunt.
• Carbamoyl phosphate synthetase-1 is the rate-limiting enzyme of the urea cycle.
• ALA synthase is the rate-limiting enzyme of heme synthesis.
• Phenylketonuria is due to phenylalanine hydroxylase deficiency.
• Alkaptonuria is due to homogentisate oxidase deficiency.
• Maple syrup urine disease is due to branched-chain alpha-ketoacid dehydrogenase deficiency.
• Classic galactosemia is due to galactose-1-phosphate uridyltransferase deficiency.
• Hereditary fructose intolerance is due to aldolase B deficiency.
• Von Gierke disease is due to glucose-6-phosphatase deficiency.
• McArdle disease is due to muscle glycogen phosphorylase deficiency.
• Tay-Sachs disease is due to hexosaminidase A deficiency.
• Gaucher disease is due to glucocerebrosidase deficiency.
• Niacin deficiency causes pellagra.
• Vitamin C deficiency causes scurvy.
• Vitamin B12 deficiency can cause megaloblastic anaemia and subacute combined degeneration.
• Apo C-II activates lipoprotein lipase.
• Apo A-I activates LCAT.
• Apo B-100 binds to LDL receptors.
• Southern blot detects DNA.
• Northern blot detects RNA.
• Western blot detects proteins.
• PCR is used for the amplification of DNA.
• Competitive inhibition increases Km but does not change Vmax.
• Non-competitive inhibition decreases Vmax but does not change Km.
• Uncompetitive inhibition decreases both Km and Vmax.

Biochemistry revision should be table-based, pathway-oriented, and clinically integrated. In the last few weeks before NEET PG, avoid reading long explanations and focus on active recall.

1. Revise metabolic pathways through flowcharts

Pathways like glycolysis, TCA cycle, urea cycle, heme synthesis, cholesterol synthesis, and fatty acid oxidation should be revised using flowcharts.

2. Memorise rate-limiting enzymes

Rate-limiting enzymes are repeatedly asked in NEET PG. Make a separate list and revise it daily.

3. Focus on enzyme deficiencies

Inborn errors of metabolism are high-yield. Revise the enzyme defect, accumulated metabolite, clinical features, and treatment for each disorder.

4. Revise vitamins through tables

Vitamins are scored if revised through deficiency, toxicity, coenzyme form, and clinical manifestation tables.

5. Practice molecular biology questions

PCR, blotting techniques, recombinant DNA technology, and DNA repair are frequently tested and should not be skipped.

6. Use MCQs for active recall

Biochemistry is best retained through repeated MCQ practice. After every topic, solve related MCQs and revise mistakes.

7. Give extra attention to clinical biochemistry

Revise jaundice patterns, liver function tests, renal function tests, lipid profile, and diabetes-related biochemical changes.

8. Revise PYQs thoroughly

PYQs help you identify repeated themes and frequently tested facts. Use them to decide what to revise first.

Recommended Resources for Biochemistry NEET PG Preparation

To strengthen your Biochemistry preparation for NEET PG 2026, use a combination of structured video lectures, QBank practice, PYQ analysis, and rapid revision resources.

You can revise Biochemistry with:

• DigiNerve NEET PG Courses
• Biochemistry QBank
• Biochemistry Previous Year Questions
• Biochemistry One Shot Revision Videos
• Subject-wise rapid revision notes
• Image-based question practice
• Related NEET PG PYQ blogs
• Previous subject revision blog
• Next subject revision blog

Frequently Asked Questions

Q1. What are the most important topics in Biochemistry for NEET PG?

Ans – The most important Biochemistry topics for NEET PG include carbohydrate metabolism, lipid metabolism, amino acid metabolism, molecular biology, genetics, vitamins, enzymes, inborn errors of metabolism, heme metabolism, and clinical biochemistry. Among these, molecular biology, vitamins, enzyme deficiencies, and metabolic disorders are especially high-yield.

Q2. How to revise Biochemistry quickly for NEET PG?

Ans – To revise Biochemistry quickly for NEET PG, focus on high-yield tables, metabolic pathway flowcharts, rate-limiting enzymes, vitamin deficiency charts, inborn errors of metabolism, PYQs, and MCQs. Avoid reading lengthy theory during the final revision phase and prioritise active recall.

Q3. Which Biochemistry topics are most repeated in NEET PG?

Ans – Repeated Biochemistry topics in NEET PG include rate-limiting enzymes, glycogen storage diseases, vitamins, molecular biology techniques, PCR, blotting methods, phenylketonuria, maple syrup urine disease, urea cycle disorders, lipoproteins, apolipoproteins, jaundice, porphyrias, and enzyme kinetics.

Q4. Is rapid revision enough for NEET PG preparation?

Ans – Rapid revision is useful during the final phase of NEET PG preparation, but it should not be the only method of study. It works best after completing your first round of Biochemistry preparation and should be combined with MCQ practice, PYQ revision, image-based question practice, and repeated recall of high-yield tables.