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Vitamins and Coenzymes

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

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

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Vitamins and Coenzymes
The prosthetic group biotin is a carrier of which type of molecule?

Activated carbon dioxide (CO2)
Methyl group
Ammonia
Sulfhydryl group

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

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

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

dihydrofolic acid
hydrofolic acid
tetrahydrofolic acid
trihydrofolic acid

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Vitamins and Coenzymes
Who discovered vitamin C (ascorbic acid)?

Linus Pauling
Paul Berg
Kerry Mull is
Albert Szent-Gyorgyi

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Vitamins and Coenzymes
Biotin occurs mainly in combined forms bound to protein through

ε-S-lysine moiety
ε-N-lipoyl - L-lysine
ε-N-biotinyl-L-lysine
ε-N-lysine moiety

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