medical MCQs – Page 390

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

7781. 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

7782. 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

7783. Deficiency of vitamin A causes the following except_____________?
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A. Myopia

B. Corneal dryness

C. Night blindness

D. Bitots spots

7784. Malonyl aciduria is seen in deficiency of_____________?
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A. Pyridoxine

B. Folic acid

C. B12

D. Riboflavin

7785. 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

7786. Vitamin K dependent clotting factors are______________?
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A. IX

B. II

C. X

D. All of the above

E. VII

7787. Vitamin K antagonizes_____________?
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A. Corticosteroids

B. Bishydroxy coumarin

C. Production of clotting factors by liver

D. Thrombin formation

7788. Which vitamin is the most indispensable during mitosis______________?
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A. Pantothenic acid

B. Aspartic acid

C. Ascorbic acid

D. Folic acid

7789. 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

7790. 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

7791. Absorption of vitamin K requires normal absorption of_________________?
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A. Calcium

B. Amino acids

C. Fat

D. Glucose

7792. 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

7793. The 3 Ds dermatitis, diarrhoea and dementia are seen in deficiency of____________?
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A. Riboflavin

B. Thiamin

C. Pyridoxine

D. Niacin

7794. Daily Vitamin A intake___________?
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A. 1000 I.U

B. 3000 I.U

C. 4000 I.U

D. 2000 I.U

7795. Coenzyme forms are correctly matched except_____________?
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A. Vitamin B ATP

B. Vitamin B2 FMN+FAC

C. Biotin carboxylated biotin

D. Niacin NAD+NADP

7796. In vitamin A deficiency, patient complains of all of the following except___________?
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A. Night blindness

B. Keratosis

C. Xerophthalmia

D. Phophoric calciuria

7797. Vitamin also acting as hormones________________?
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A. Vitamin D

B. Vitamin C

C. Vitamin B1

D. Vitamin A

7798. Deficiency of vitamin C causes the following except____________?
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A. Abnormal Collagen

B. Diarrhoea

C. Anaemia

D. Painful swollen gums

7799. Vit B12 is absorbed in the_____________?
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A. Stomach

B. Proximal ileum

C. Terminal ileum

D. Lower jejunum

7800. Scurvy is the result of deficiency of____________?
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A. Vitamin C

B. Vitamin D

C. Vitamin A

D. Vitamin B

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