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Vitamins and Coenzymes

Vitamins and Coenzymes
Vitamin-C is considered as a

fat soluble
fat and water soluble
none of these
water soluble

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

Methyl group
Activated carbon dioxide (CO2)
Ammonia
Sulfhydryl group

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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.

adenine
5-6 dimethylbenzimidazole
cyanocobalamin
hydroxycobalamin

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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
What metal ion is specifically bound by vitamin B12?

Iron
Cobalt
Zinc
Copper

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Vitamins and Coenzymes
A deficiency of Vitamin K results in a decreased level of

fibrinogen
fibrin
thrombin
prothrombin

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