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Vitamins and Coenzymes

Vitamins and Coenzymes
Ascorbic acid acts as an

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

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

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

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

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

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

reducing agent
all of these
antioxidants
oxidizing agent

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

ferredoxin
pyridoxal phosphat
pyrophosphate
FAD

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Vitamins and Coenzymes
Main function of insulin hormone is to

increase glycogen in liver
decrease blood sugar
decrease glycogen in liver
increase blood sugar

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