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NTRUHS MBBS Biochemistry August 2024 (M102A031 SET-B Regular)

M102A031Dr. NTR University of Health Sciences · Biochemistry · 2024 · August · Regular

Questions (20)

  1. 1.Which of the following enzymes requires Adenosine Triphosphate (ATP) for its action? a. Argino Succinate lyase b. Argino Succinate synthetase c. Arginase d. Glutaminase
    1 Mark
  2. 2.Which of the following contributes nitrogen atoms to both purine and pyrimidine rings? a. Aspartate b. Carbamoyl phosphate c. Carbon dioxide d. Glutamate
    1 Mark
  3. 3.The greatest buffering capacity at physiological pH would be provided by a protein rich in which of the following amino acids? a. Serine b. Cysteine c. Alanine d. Histidine
    1 Mark
  4. 4.Purely ketogenic amino acid is a. Leucine b. Threonine c. Isoleucine d. Tyrosine
    1 Mark
  5. 5.RNA synthesis is different from DNA synthesis com in the following ways, except: a. No efficient proofreading function during RNA synthesis b. Primer is not involved in RNA synthesis com c. DNA synthesis occurs with 5'-3' polarity, whereas RNA synthesis occurs with 3'-5' polarity d. 'U' replaces 'T' as the complementary base for 'A' in RNA synthesis
    1 Mark
  6. 6.The translation factor which helps in forming ternary tRNA methionine complex is: a. elF2C b. elF4A c. elF4B d. elF3
    1 Mark
  7. 7.Nucleosomes are a fundamental unit of DNA organization. It consists of histones complexed to DNA. Histone proteins present in nucleosomes are rich in which of the following amino acids: a. Histidine and lysine b. Lysine and arginine c. Arginine and histidine d. Histidine and valine
    1 Mark
  8. 8.Which out of the following is nota product of tyrosine metabolism: a. Melanin b. Melatonin c. Thyroxin d. Epinephrine
    1 Mark
  9. 9.Which one of these inhibits adenylyl cyclase: a. ACTH b. ADH c. Angiotensin II d. Glucagon
    1 Mark
  10. 10.Which is the major intracellular cation: a. Na+ b. K+ c. Ca2+ d. Mg2+
    1 Mark
  11. 11.Normal anion gap metabolic acidosis is caused by: a. Cholera b. Starvation c. Ethylene glycol poisoning d. Lactic acidosis
    1 Mark
  12. 12.The major urinary buffer is: a. Bicarbonate b. Phosphate c. Protein d. Hemoglobin
    1 Mark
  13. 13.Marker enzyme for Golgi complex is: a. Galactosyl transferase b. Catalase c. Glucose 6 phosphatase d. None
    1 Mark
  14. 14.Which of the following is a negative phase reactant a. C Reactive protein b. Albumin c. Fibrinogen d. Ferritin
    1 Mark
  15. 15.Plasmids contain a a. Circular single stranded DNA b. Linear single stranded DNA c. Circular double stranded DNA d. Linear double stranded DNA
    1 Mark
  16. 16.Which of the following immunoglobulin crosses placenta a. IgG b. IgM c. IgE d. IgA
    1 Mark
  17. 17.Which of the following activity is not seen in DNA polymerase I a. 5'-3' polymerase b. 3'-5' polymerase c. 5'-3' exonuclease d. 3'-5' exonuclease
    1 Mark
  18. 18.Highly repetitive DNA is seen in a. Telomere b. Centromere c. Both d. None
    1 Mark
  19. 19.Which enzyme defect is seen in Homocystinuria type I a. Methionine synthase b. Cystathionine beta synthase c. Cystathioninase d. None of the above
    1 Mark
  20. 20.All are involved in iron metabolism except a. Hepcidin b. Transthyreth c. Ceruloplasmin d. Ferroprotein
    1 Mark

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