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Vitamins and Coenzymes

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

Cobalamin
Pyridoxine
Thiamine
Beta-Carotene

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Vitamins and Coenzymes
Biotin occurs mainly in combined forms bound to protein through

ε-N-biotinyl-L-lysine
ε-S-lysine moiety
ε-N-lipoyl - L-lysine
ε-N-lysine moiety

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Vitamins and Coenzymes
The absence of ascorbic acid in the human diet gives rise to

rickets
cataract
beri-beri
pernicious anemia

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

pyridoxal phosphat
pyrophosphate
ferredoxin
FAD

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Vitamins and Coenzymes
β-carotene together with α-carotene, γ-carotene and cryptoxanthine are synthesized by

animal
plants and animals both
none of these
plants

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

ferredoxin
NAD+
pyrophosphate
pyridoxal phosphate

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