Control of Gene Expression
- Previous year questions on Control of Gene Expression for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Biochemistry section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 60 live questions in Control of Gene Expression.
- 2 of 60 questions carry a verified exam year: 2018, 2020.
- Biochemistry is worth about 16 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 6 Sept 2026.
Q1.which is false regarding LAC OPERON MODEL :
- ACAMP-CAP COMPLEX IS A POSITIVE REGULATOR
- BPROMOTER IS A TRANS ACTING FACTOR✓ Correct answer
- CY gene = GALACTOSIDE PERMEASE
- DA gene= GALACTOSIDE ACETYLASE
Q2.miRNA binding site for gene knock down?
- A3' untranslated region✓ Correct answer
- B5' untranslated region
- CIntrons
- DBoth 3' and 5' untranslated region
Q3.Which DNA segments in the lactose operon of E. coli is a trans-acting regulatory element?
- AB-galactosidase gene
- BOperator
- CPromoter
- DI gene✓ Correct answer
Q4.In leucine zipper model, Leucine residue seen after every
- A3 amino acids
- B6 amino acids
- C7 amino acids✓ Correct answer
- D12 amino acids
Q5.Proteins which have DNA binding domain in its structure is
- AZinc finger✓ Correct answer
- Bb - Sheet
- Cb - band
- DBeta meander
Q6.V) hich of the following can change the gene expression by methylation and acetylation without affecting the content of the gene?
- AEpigenetics✓ Correct answer
- BTranslocation
- CInversion
- DTransduction
Q7.Which of the following does not cause permissive euchromatin due to changes occurring at cytosine residues at CpG islands in DNA?
- AMethylation✓ Correct answer
- BAlkylation
- CPhosphorylation
- DSumoylation
Q8.CG islands in our DNA are important for:
- AMethylation✓ Correct answer
- BAcetylation
- Ct-RNA synthesis
- DDNA replication
Q9.DNA Methylation is not related with?
- AMismatch repair
- BDNA Replication
- CGene silencing
- DCapping✓ Correct answer
Q10.True about DNA methylation:
- AAlters gene expression
- BGenetic code remains intact
- CRole in carcinogenesis and Protective mechanism against cleavage by restriction endonuclease both
- DAll of the above✓ Correct answer
Answer key
Q1: B. PROMOTER IS A TRANS ACTING FACTOR; Q2: A. 3' untranslated region; Q3: D. I gene; Q4: C. 7 amino acids; Q5: A. Zinc finger; Q6: A. Epigenetics; Q7: A. Methylation; Q8: A. Methylation; Q9: D. Capping; Q10: D. All of the above.
Other topics in Biochemistry
- Carbohydrate Chemistry, Amino Sugars and Glycosaminoglycans
- Glycolysis, Gluconeogenesis and Their Regulation
- Glycogen Metabolism and Storage Diseases
- HMP Shunt with Fructose and Galactose Metabolism
- Bioenergetics and the ETC
- Krebs Cycle
- Amino Acids: Structure and Classification
- Amino Acid Metabolism and Nitrogen Handling
- Inborn Errors of Amino Acid Metabolism
- Levels of Protein Structure and Function
- Urea Cycle and Hyperammonaemia
- Lipids: Classification and Chemistry
- Beta-Oxidation and Ketone Body Formation
- Fatty Acid Synthesis and Eicosanoids
- Acylglycerol and Sphingolipid Metabolism
- Cholesterol Metabolism and Lipoprotein Transport
- Haem Synthesis, Porphyrias and Bile Pigments
- Enzymes: Mechanism of Action and Clinical Uses
- Enzyme Kinetics, Inhibition and Regulation
- Fat-Soluble Vitamins: A, D, E and K
- B-Complex Vitamins in Energy Metabolism
- Folate, Vitamin B12 and Other Vitamins
- Minerals and Antioxidant Systems
- Nucleotide Metabolism and Its Disorders
- DNA Packaging, Replication and Repair
- Transcription and RNA Processing
- Translation and Post-Translational Modification
- Recombinant DNA and Genomic Techniques