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Vitamins and Coenzymes

Vitamins and Coenzymes
A deficiency of niacin causes

pellagra
cataract
scurvy
anemia

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

dihydrofolic acid
tetrahydrofolic acid
trihydrofolic acid
hydrofolic acid

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

Zinc
Iron
Copper
Cobalt

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

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

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

pyrophosphate
pyridoxal phosphate
NAD+
ferredoxin

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Vitamins and Coenzymes
Which of these molecules is vitamin H?

Folic acid
Biotin
None of these
Carnitine

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MORE MCQ ON Vitamins and Coenzymes

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