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VITAMINS AND COENZYMES

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

vitamin K
vitamin A
niacin
vitamin C

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

Thiamine
Cobalamin
Pyridoxine
Beta-Carotene

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

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

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Vitamins and Coenzymes
Vitamin K1 was first isolated from alfalalfa and has the phytyl side chain consisting of

nine isoprene units
four isoprene units
four isoprene units
six isoprene units

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Vitamins and Coenzymes
Which of these molecules is vitamin H?

Biotin
None of these
Folic acid
Carnitine

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