Biochemistry MCQs

Page No. 2

Deficiency of vitamin A causes the following except_____________?


aNight blindness

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bCorneal dryness

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cBitot’s spots

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dMyopia

✓


View Answer Myopia

Active form of vitamin D in kidney is_____________?


a1 dihydroxy cholecalciferol

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b25 hydroxy cholecalciferol

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c1,25 dihydroxy cholecalciferol

✓


d7 dihydroxy calciferol

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The vitamin that facilitates iron absorption____________?


aFolic acid

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bAscorbic acid

✓


cBiotin

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dPara amino benzoic acid

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View Answer Ascorbic acid

In vitamin A deficiency, patient complains of all of the following except___________?


aNight blindness

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bXerophthalmia

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cKeratosis

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dPhophoric calciuria

✓


View Answer Phophoric calciuria

Vitamin K antagonizes_____________?


aCorticosteroids

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bThrombin formation

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cBishydroxy coumarin

✓


dProduction of clotting factors by liver

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View Answer Bishydroxy coumarin

Vitamin K____________?


aHelps in formation of prothrombin

✓


bInhibition of antithrombin

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cPrevention of capillary fragility

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dStimulation of hematopoiesis in red bone marrow

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Rhodopsin deficiency is chiefly associated with________________?


aVitamin D deficiency

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bRickets

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cVitamin A deficiency

✓


dScurvy

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View Answer Vitamin A deficiency

Deficiency of which vitamin causes glossitis dementia roughed keratotic areas on skin and gastrointestinal symptoms ?


aRiboflavin

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bPyridoxine

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cNiacin

✓


dPantothenic acid

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View Answer Niacin

In humans and other primates as well as in guinea pigs, this vitamin cannot be synthesized because of the absence of the enzyme L-gulonolactone oxidase: the vitamin is_____________?


aPantothenic acid

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bNicotinic acid

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cAscorbic acid

✓


d Folic acid

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View Answer Ascorbic acid

Deficiency of nicotinic acid results in____________?


aBeri-beri

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bPellagra

✓


cNight blindness

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dPernicious anemia

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View Answer Pellagra

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