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Vitamins and Coenzymes

Vitamins and Coenzymes
A deficiency of niacin causes

pellagra
scurvy
cataract
anemia

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Vitamins and Coenzymes
Ascorbic acid acts as an

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

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Vitamins and Coenzymes
Selenium is an essential component of the enzyme glutathione peroxidase which

reduces toxic hydoperoxycompounds in tissues
scavenges toxic hydoperoxycompounds in tissues
oxidizes toxic hydoperoxycompounds in tissues
None of these

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

pyridoxal phosphat
pyrophosphate
ferredoxin
FAD

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

none of these
night blindness
xeropthalmia
keratinization

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Vitamins and Coenzymes
Lipoic acid is a co-factor of the

α-ketoglutaric dehydrogenase
both (a) and (b)
pyruvic dehydrogenase
di-hydroorotate dehydrogenase

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