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Vitamins and Coenzymes

Vitamins and Coenzymes
A deficiency of niacin causes

cataract
scurvy
anemia
pellagra

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

fishes
plants
micro-organisms
animals

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

Zinc
Iron
Cobalt
Copper

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Vitamins and Coenzymes
The occurrence of metals such as iron or molybdenum in some flavoproteins can

all of these
de-stabilize the semiquinone
form chelation
stabilize the semiquinone

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Vitamins and Coenzymes
Ascorbic acid acts as an

None of these
oxidizing and reducing agent both
oxidizing agent
reducing agent

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Vitamins and Coenzymes
Vitamin-C is considered as a

none of these
water soluble
fat soluble
fat and water soluble

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