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Vitamins and Coenzymes

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

oxidizing agent
all of these
antioxidants
reducing agent

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Vitamins and Coenzymes
Main function of insulin hormone is to

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

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

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

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

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

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

scurvy
anemia
cataract
beri-beri

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Vitamins and Coenzymes
In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.

hydroxycobalamin
cyanocobalamin
adenine
5-6 dimethylbenzimidazole

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