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Vitamins and Coenzymes

Vitamins and Coenzymes
An enzyme, L-folate reductase reduces folic acid to

hydrofolic acid
dihydrofolic acid
tetrahydrofolic acid
trihydrofolic acid

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Vitamins and Coenzymes
Vitamin B12 (Cobalamin) is only synthesized by

plants
animals
fishes
micro-organisms

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Vitamins and Coenzymes
β-carotene together with α-carotene, γ-carotene and cryptoxanthine are synthesized by

animal
plants
none of these
plants and animals both

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Vitamins and Coenzymes
Vitamin-C is considered as a

fat and water soluble
none of these
fat soluble
water soluble

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Vitamins and Coenzymes
A deficiency of thiamin produces the disease known as

beri-beri
cataract
anemia
scurvy

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Vitamins and Coenzymes
In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.

adenine
cyanocobalamin
5-6 dimethylbenzimidazole
hydroxycobalamin

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