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NTRUHS MBBS Biochemistry January 2023 (15A03101 SET-B Regular)

15A03101Dr. NTR University of Health Sciences · Biochemistry · 2023 · January · Regular

Questions (20)

  1. 1.In pheochromocytoma, there is excess synthesis of a. Vanillyl mandelic acid b. Polyamines c. Hippuric acid d. Indole acetic acid
    1 Mark
  2. 2.Acetylcholine can be synthesized from which amino acid: a. Tyrosine b. Serine c. Threonine d. Tryptophan
    1 Mark
  3. 3.Ammonia is trapped in the brain by: a. Glutamine synthase reaction b. Carbamoyl phosphate synthase 1 c. Citrate synthase d. Glutamate dehydrogenase
    1 Mark
  4. 4.Tertiary structure of protein describes: a. The sequence of amino acids b. The location of disulfide bonds c. Amino terminal end amino acid d. The nature of protein folding
    1 Mark
  5. 5.Formation of dTMP requires a. Coenzyme A b. NADPH c. Vitamin C d. Molybdenum
    1 Mark
  6. 6.Secondary hyperuricemia is present in all the following conditions a. Polycythemia b. Cytotoxic drug therapy c. Leukemia d. Hepatitis
    1 Mark
  7. 7.Which of the below mentioned enzyme does not contain copper: a. Cytochrome oxidase b. Superoxide dismutase c. Xanthine oxidase d. Tyrosinase
    1 Mark
  8. 8.Zinc is constituent of all the following enzymes except: a. Alkaline phosphatase b. Amylase c. Carbonic anhydrase
    1 Mark
  9. 9.Which of the enzyme listed below is heat stable? a. Restriction endonuclease b. Thermo thermophilus c. Reverse transcriptase d. Enterokinase
    1 Mark
  10. 10.The following are the vectors for gene therapy except: a. Retrovirus b. E. Coli c. Adenovirus d. Liposome
    1 Mark
  11. 11.Unusual nucleotide bases are found in significant quantity in: a. Messenger RNA b. Ribosomal RNA c. Transfer RNA d. snRNA
    1 Mark
  12. 12.Denaturation of DNA is accompanied by all the following changes except: a. Hyperchromicity b. Increase in viscosity c. Unstacking of base d. Double helix structure
    1 Mark
  13. 13.Administration of diuretics causes loss of potassium ions which can lead to: a. Metabolic alkalosis b. Metabolic acidosis c. Respiratory acidosis d. Respiratory alkalosis
    1 Mark
  14. 14.Hydroxylation occurs in which of the following amino acids in collagen: a. Threonine b. Alanine c. Lysine d. Tryptophan
    1 Mark
  15. 15.Which of the following is due to tumor suppressor mutation? a. Retinoblastoma b. Hyperthyroidism c. Cystic Fibrosis d. Sickle cell disease
    1 Mark
  16. 16.The uptake of iodine by thyroid gland is inhibited by: a. Fluoride b. Perchlorate c. Bromide d. Chloride
    1 Mark
  17. 17.The following is not an acute phase protein: a. CRP b. Ceruloplasmin c. HDL d. Haptoglobin
    1 Mark
  18. 18.Sodium potassium pump is inhibited by: a. Aspirin b. Digoxin c. Methotrexate d. Rifampicin
    1 Mark
  19. 19.Oncogenes are specific sequences in DNA: a. That are tumor markers b. When expressed produce cancer c. That code for reverse transcriptase d. Required for DNA replication
    1 Mark
  20. 20.Patients treated with carbonic anhydrase inhibitor can develop: a. Metabolic acidosis b. Respiratory acidosis c. Respiratory alkalosis d. Metabolic alkalosis
    1 Mark

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