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Vitamins and Coenzymes

Vitamins and Coenzymes
A deficiency of niacin causes

pellagra
scurvy
cataract
anemia

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Vitamins and Coenzymes
Lipoic acid is a co-factor of the

di-hydroorotate dehydrogenase
α-ketoglutaric dehydrogenase
both (a) and (b)
pyruvic dehydrogenase

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

dihydrofolic acid
hydrofolic acid
trihydrofolic acid
tetrahydrofolic acid

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Vitamins and Coenzymes
Vitamins are essential because the organism

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

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Vitamins and Coenzymes
Dihydroorotate dehydrogenase contains

4 flavins and 4 atoms of iron per molecule
2 flavins and 2 atoms of iron per molecule
4 flavins and 2 atoms of iron per molecule
2 flavins and 4 atoms of iron per molecule

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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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