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Vitamins and Coenzymes

Vitamins and Coenzymes
Vitamin-C is considered as a

none of these
water soluble
fat and water soluble
fat soluble

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

Linus Pauling
Albert Szent-Gyorgyi
Paul Berg
Kerry Mull is

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Vitamins and Coenzymes
The reductant, NADH, transfers the electrons via a flavo-proteins to the specific disulfide (S-S) protein to form a dithiol (SH,SH) protein which converts vitamin

B12(Co2+)to B12(Co+)
B12(Co2+)to B12(Co)
B12(Co+)to B12(Co2+)
B12(Co) to B12(Co2+)

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

hydrofolic acid
tetrahydrofolic acid
trihydrofolic acid
dihydrofolic acid

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Vitamins and Coenzymes
What metal ion is specifically bound by vitamin B12?

Copper
Zinc
Cobalt
Iron

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

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

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