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Vitamins and Coenzymes

Vitamins and Coenzymes
In one iron-metalloflavoprotein, the iron is present as a

heme-protein
flavin moiety
both (a) and (b)
nonheme type

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

beri-beri
scurvy
cataract
anemia

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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
Which of the following are reduced coenzymes?

NADH and FADH2
NAD+ and FAD
Coenzyme A and ubiquinone
ATP and GTP

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Vitamins and Coenzymes
Ascorbic acid acts as an

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

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Vitamins and Coenzymes
Vitamins are essential because the organism

can't synthesize these compounds in the adequate amounts
None of these
can synthesize these compounds partially
can't synthesize these compounds at all

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