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Vitamins and Coenzymes

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

hydrofolic acid
trihydrofolic acid
tetrahydrofolic acid
dihydrofolic acid

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Vitamins and Coenzymes
The most prominent role that tocopherol has in in-vitro systems is as a strong

reducing agent
all of these
oxidizing agent
antioxidants

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Vitamins and Coenzymes
A deficiency of niacin causes

anemia
pellagra
cataract
scurvy

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Vitamins and Coenzymes
Which of the following compounds/(s) belong/(s) to the vitamin B6 group?

Pyridoxamine
Pyridoxal
All of these
Pyridoxine

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

animals
fishes
micro-organisms
plants

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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.

cyanocobalamin
hydroxycobalamin
adenine
5-6 dimethylbenzimidazole

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