Biochemistry MCQs

Page No. 4

Vit B12 is absorbed in the_____________?


aStomach

✖


bTerminal ileum

✓


cLower jejunum

✖


dProximal ileum

✖


View Answer Terminal ileum

Deficiency of vitamin C causes the following except____________?


aPainful swollen gums

✖


bAbnormal Collagen

✖


cAnaemia

✖


dDiarrhoea

✓


View Answer Diarrhoea

Vitamin B12 acts as a coenzyme to which one of the following enzyme ?


aIsocitrate dehydrogenase

✖


bHomocyteine methyl transferase

✓


cGlycogen synthase

✖


dG-6-P dehydrogenase

✖



Vitamin A_____________?


aIs water soluble

✖


bDeficiency causes impaired vision

✓


cMaintains normal plasma calcium levels

✖


dIs required for formation of clotting factors

✖



The maximum content of vitamin E is found in____________?


aCold liver oil

✖


bFish liver oil

✖


cWheat germ oil

✓


dLiver

✖


View Answer Wheat germ oil

One molecule of B-carotene gives rise to______________?


a1 unit of Vitamin A

✖


b2 unit of Vitamin A

✓


c3 unit of Vitamin A

✖


d4 unit of Vitamin A

✖


View Answer 2 unit of Vitamin A

Thiamine deficiency causes decreased energy production because____________?


aIt is required for the process of transmination

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bIt is co-factor in oxidative reduction

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cIt is co-enzyme for transketolase in pentose phosphate pathway

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dIt is co-enzyme for pyruvate dehydrogenase

✓



Vitamin D_____________?


aAbsorption requires bile pigments

✖


bSynthesis is regulated at the reaction catalyzed by 15-hydroxylase

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cDeficiency on adults leads to rickets

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dAlong with PTH, increases calcium resorption from bone

✓



1st clinical sign of vitamin A deficiency is_____________?


anight blindness

✖


bbitot’s spots

✖


cxerostomia

✖


dconjunctival xeroses

✓


View Answer conjunctival xeroses

The mineral having sparing action on Vitamin E_______________?


aChromium

✖


bIron

✖


cIodine

✖


dSelenium

✓


View Answer Selenium

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