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Vitamins and Coenzymes

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

Ammonia
Activated carbon dioxide (CO2)
Methyl group
Sulfhydryl group

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Vitamins and Coenzymes
Vitamins are essential because the organism

can't synthesize these compounds at all
can synthesize these compounds partially
None of these
can't synthesize these compounds in the adequate amounts

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

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

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

FAD
pyrophosphate
pyridoxal phosphat
ferredoxin

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Vitamins and Coenzymes
Which of these hormones is a catecholamine?

Tetrahydrofolate
Follitropin
Tetraiodothyronine
Norepinephrine

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

vitamin K
niacin
vitamin C
vitamin A

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