Download NTRUHS 1st Year MBBS 2024 October Biochemistry Paper II MCQs Question Paper

Q.P. CODE : M102A031

Dr. NTR UNIVERSITY OF HEALTH SCIENCES: AP : VIJAYAWADA-520008

MBBS DEGREE EXAMINATION - OCTOBER, 2024

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FIRST M.B.B.S. EXAMINATION

BIOCHEMISTRY - PAPER-II (SET-B)

(Multiple Choice Questions)

Max Marks: 20

Time: 20 Minutes

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Note: Answer all questions.

SECTION-I (MCQs - 20 MARKS) 1X2=20

1. Plasma proteins which contain more than 4% hexosamine are
   1. Microglobulins
   2. Glycoproteins
   3. Orosomucoids

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   4. Mucoproteins
2. Which of the following is a tripeptide?
   1. Anserine
   2. Oxytocin
   3. Glutathione

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   4. Kallidin
3. The following points about microfilaments are true except
   1. They form cytoskeleton with microtubules
   2. They form intracellular conducting channels
   3. They provide support and shape

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   4. They are involved in muscle cell contraction
4. Mitochondrial DNA is
   1. Circular double stranded
   2. Circular single stranded
   3. Linear double helix

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   4. None of these
5. An amino acid that does not take part in a helix formation is
   1. Histidine
   2. Tyrosine
   3. Tryptophan

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   4. Proline
6. In urea synthesis, the amino acid functions solely as an enzyme activator
   1. Ornithine
   2. Citrulline
   3. N-acetyl glutamate

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   4. Arginine
7. The amino acid which detoxicated benzoic acid to form hippuric acid is
   1. Alanine
   2. Glycine
   3. Serine

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   4. Glutamic acid
8. The apolipoprotein which forms the integral component of chylomicron is
   1. B-48
   2. C
   3. D

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   4. B-100
9. Plasma proteins act as
   1. Buffers
   2. Immunoglobulins
   3. Reserve proteins

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   4. All of these
10. NH3 is removed from brain mainly by
    1. Creatinine formation
    2. Uric acid production
    3. Glutamine formation

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    4. Urea formation
11. Insulin is made up of
    1. A single polypeptide chain having 51 amino acid residues
    2. A single polypeptide chain having 84 amino acid residues
    3. A-chain having 21 and B-chain having 30 amino acid residues

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    4. A-chain having 30 and B-chain having 21 amino acid residues.
12. Maple syrup urine diseases is an inborn error of metabolism of
    1. Branched chain amino acids
    2. Dicarboxylic amino acids
    3. Aromatic amino acids

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    4. Sulphur-containing amino acids
13. The Immunoglobulin which provides the highest antiviral activity is
    1. Ig G
    2. Ig E
    3. Ig D

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    4. Ig A
14. All are Amino acid-derived hormones except:
    1. Thiamine
    2. Epinephrine
    3. Testosterone

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    4. Nor-epinephrine
15. Niacin can be synthesized in human beings from
    1. Histidine
    2. Tryptophan
    3. Phenylalanine

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    4. Tyrosine
16. In mammalian cells, ribosomal RNA is produced mainly in the
    1. Nucleolus
    2. Nucleus
    3. Ribosome

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    4. Golgi apparatus
17. A characteristic pheochromocytoma is elevated urinary excretion of
    1. Dopamine
    2. Tyrosine
    3. Phenylalanine

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    4. Vanillylmandelic acid
18. Zinc is a constituent of the enzyme
    1. Succinate dehydrogenase
    2. Mitochondrial superoxide dismutase
    3. Carbonic anhydrase

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    4. Aldolase
19. Which of the following statements about Menke's disease are true
    1. It is an inherited disorder of copper metabolism
    2. Plasma copper is increased in it
    3. It occurs only in males

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    4. Hair becomes steely and kinky in it
20. Meningitis and encephalitis cause
    1. Respiratory alkalosis
    2. Metabolic alkalosis
    3. Metabolic acidosis

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    4. Respiratory acidosis

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