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Vitamins and Coenzymes

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

xeropthalmia
none of these
night blindness
keratinization

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Vitamins and Coenzymes
Lipoic acid exists in

oxidized and reduced form both
reduced form
none of these
oxidized form

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Vitamins and Coenzymes
A deficiency of niacin causes

anemia
pellagra
cataract
scurvy

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Vitamins and Coenzymes
The vitamin niacin is part of the __________ molecule.

pyrophosphate
NAD+
ferredoxin
pyridoxal phosphate

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

all of these
antioxidants
oxidizing agent
reducing agent

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Vitamins and Coenzymes
Ascorbic acid acts as an

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

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