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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of these is a vitamin A precursor?

Thiamine
Beta-Carotene
Pyridoxine
Cobalamin

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Vitamins and Coenzymes
Vitamin-C is considered as a

none of these
fat and water soluble
water soluble
fat soluble

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

Zinc
Cobalt
Copper
Iron

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

pyrophosphate
pyridoxal phosphate
ferredoxin
NAD+

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

Ammonia
Sulfhydryl group
Methyl group
Activated carbon dioxide (CO2)

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Vitamins and Coenzymes
A fat-soluble vitamin that regulates blood clotting is

vitamin K
niacin
vitamin A
vitamin C

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