biochemistry MCQs – Page 22

Practise focused biochemistry questions with marked answers for exam preparation and subject revision.

biochemistry Mcqs

421. Active form of vitamin D in kidney is_____________?
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A. 25 hydroxy cholecalciferol

B. 1 dihydroxy cholecalciferol

C. 7 dihydroxy calciferol

D. 1,25 dihydroxy cholecalciferol

422. The mineral having sparing action on Vitamin E_______________?
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A. Selenium

B. Iron

C. Iodine

D. Chromium

423. Rhodopsin deficiency is chiefly associated with________________?
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A. Vitamin D deficiency

B. Vitamin A deficiency

C. Scurvy

D. Rickets

424. Fast soluble vitamins are_____________?
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A. A, B, E, K

B. A, B , D, K

C. A, D. E, K

D. A, C, E, K

425. The function of vitamin A is/are related to which of the following ?
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A. Retinol

B. Retinoic acid

C. All of the above

D. Retinal

426. Of prime importance in the structure of flavoproteins is____________?
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A. Vit A

B. Vit B1

C. Vit B2

D. Vit B6

427. A patient with chronic renal failure and bone pains will have deficiency of which vitamin_____________?
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A. Vitamin B

B. Vitamin A

C. Vitamin D

D. Vitamin C

428. Vitamin A_____________?
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A. Is water soluble

B. Is required for formation of clotting factors

C. Maintains normal plasma calcium levels

D. Deficiency causes impaired vision

429. One molecule of B-carotene gives rise to______________?
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A. 3 unit of Vitamin A

B. 4 unit of Vitamin A

C. 1 unit of Vitamin A

D. 2 unit of Vitamin A

430. Deficiency of vitamin A causes the following except_____________?
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A. Myopia

B. Corneal dryness

C. Night blindness

D. Bitots spots

431. Malonyl aciduria is seen in deficiency of_____________?
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A. Pyridoxine

B. Folic acid

C. B12

D. Riboflavin

432. Biological activity of tocopherols has been attributed, in part to their actions as_____________?
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A. Anticoagulants

B. Provitamin

C. Antidotes for selenium poisoning

D. Antioxidant

433. Vitamin K dependent clotting factors are______________?
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A. IX

B. II

C. X

D. All of the above

E. VII

434. Vitamin K antagonizes_____________?
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A. Corticosteroids

B. Bishydroxy coumarin

C. Production of clotting factors by liver

D. Thrombin formation

435. Which vitamin is the most indispensable during mitosis______________?
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A. Pantothenic acid

B. Aspartic acid

C. Ascorbic acid

D. Folic acid

436. Vitamin D_____________?
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A. Along with PTH, increases calcium resorption from bone

B. Deficiency on adults leads to rickets

C. Synthesis is regulated at the reaction catalyzed by 15-hydroxylase

D. Absorption requires bile pigments

437. Two Vitamin whose derivatives are involved in transformation of serine to glycine are_____________?
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A. Folic acid and B12

B. Folic acid and B6

C. B6 ad B12

D. B12 and nicotinamie

438. Absorption of vitamin K requires normal absorption of_________________?
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A. Calcium

B. Amino acids

C. Fat

D. Glucose

439. The maximum content of vitamin E is found in____________?
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A. Wheat germ oil

B. Cold liver oil

C. Fish liver oil

D. Liver

440. The 3 Ds dermatitis, diarrhoea and dementia are seen in deficiency of____________?
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A. Riboflavin

B. Thiamin

C. Pyridoxine

D. Niacin

Showing 421 to 440 of 448 mcqs