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Vitamins and Coenzymes

Vitamins and Coenzymes
What metal ion is specifically bound by vitamin B12?

Iron
Copper
Cobalt
Zinc

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Vitamins and Coenzymes
Vitamin-D deficiency can cause

beri-beri
pernicious anemia
cataract
rickets

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Vitamins and Coenzymes
An early sign of retinol deficiencies in man is

night blindness
none of these
xeropthalmia
keratinization

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Vitamins and Coenzymes
The prosthetic group biotin is a carrier of which type of molecule?

Sulfhydryl group
Activated carbon dioxide (CO2)
Ammonia
Methyl group

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Vitamins and Coenzymes
In one iron-metalloflavoprotein, the iron is present as a

heme-protein
both (a) and (b)
nonheme type
flavin moiety

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Vitamins and Coenzymes
Vitamin-C is considered as a

fat and water soluble
fat soluble
none of these
water soluble

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