Download NTRUHS 1st Year MBBS 2022 February Biochemistry Paper II Question Paper

Q.P. CODE:500-B-CBME

DR. NTR UNIVERSITY OF HEALTH SCIENCES: AP:VIDAYAWADA -520 008

MBBS DEGREE EXAMINATION – JAN/FEB, 2022

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FIRST M.B.B.S. EXAMINATION

BIOCHEMISTRY - PAPER-II (Set A)

(Multiple Choice Questions)

Time: 20 Minutes Max Marks: 20

Note: Answer all questions

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SECTION – I (MCQs- 20 MARKS) 1x20=20

1. During urea cycle two nitrogen atoms are derived from
1. Ammonia and arginine
2. Ammonia and aspartic acid
3. Both from Ammonia

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4. Ammonia and Ornithine
2. Ammonia is trapped in brain by
1. Glutamine Synthetase reaction
2. Glutaminase reaction
3. Urea Synthesis cycle

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4. Glutamate dehydrogenase reaction
3. The Major Donor of Carbon Atoms to the One-Carbon Pool is
1. Serine
2. Tyrosine
3. Threonine

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4. Proline
5. Which amino acid will give rise to major pigment of the body?
1. Histidine
2. Glutamic acid
3. Ornithine

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4. Tyrosine
6. Homogentisic acid is excreted in urine in
1. Phenylketonuria
2. Maple syrup urine disease
3. Tyrosinosis

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4. Alkaptonuria
7. Ochronosis is seen in
1. Phenyl Ketonuria
2. Alkaptonuria
3. Tyrosinosis

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4. Albinism
8. The anti-coagulant found in the body
1. Potassium oxalate
2. Sodium Citrate
3. Heparin

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4. EDTA
9. Hemopexin carries
1. Free hemoglobin
2. Free heme
3. Free bilirubin

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4. Free iron
10. Administration of diuretics cause loss of potassium which may lead to
1. Metabolic acidosis
2. Respiratory acidosis
3. Respiratory alkalosis

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4. Metabolic alkalosis
11. Which of the following conditions will produce high anion gap acidosis?
1. Diarrhea
2. Renal tubular acidosis
3. Renal failure

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4. Uretero sigmoidostomy
12. ECF volume does not change with
1. ADH
2. Aldosterone
3. Calcitriol

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4. Renin
13. The cation with lowest intra cellular concentration
1. Potassium
2. Magnesium
3. Sodium

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4. Calcium
14. Which contains iron
1. Ceruloplasmin
2. Xanthine oxidase
3. Albumin

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4. Superoxide desmutase
15. Which enzyme do not contain copper?
1. Cytochrome Oxidase
2. Superoxide dismutase
3. Xanthine oxidase

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4. Tyrosinase
16. The micro mineral present in teeth is
1. Calcium
2. Iodine
3. Fluorine

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4. Manganese
17. Which of the following trace element has antioxidant role?
1. Chromium
2. Zinc
3. Selenium

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18. Nickel
19. Sigma factor is
1. A sub unit of DNA polymerase
2. A sub unit of RNA polymerase
3. A sub unit of 50 S ribosome

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4. responsible for initiation of replication
20. Intron is portion of
1. DNA that is cleaved of during replication
2. mRNA that is removed after transcription
3. tRNA that is added on after its synthesis

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4. Protein removed after translation
21. Which hormone does not act at the level of transcription
1. Cortisol
2. Calcitriol
3. Aldosterone

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4. Calcitonin
22. M band in serum protein electrophoresis is seen in which condition?
1. Cirrhosis
2. Chronic infections
3. Multiple myeloma

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4. Heavy chain disease

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