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Vitamins and Coenzymes

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

hydrofolic acid
tetrahydrofolic acid
dihydrofolic acid
trihydrofolic acid

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

plants
none of these
animal
plants and animals both

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Vitamins and Coenzymes
Models of end-linked Osaka VI Fibrinogen dimers, a bilayer dimer is linked at

both ends by two disulfide bonds
either end via two disulfide bonds
either end via a single disulfide bond
both ends by one disulfide bond

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Vitamins and Coenzymes
A deficiency of niacin causes

scurvy
pellagra
anemia
cataract

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

Activated carbon dioxide (CO2)
Methyl group
Ammonia
Sulfhydryl group

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Vitamins and Coenzymes
Which of these hormones is a catecholamine?

Tetraiodothyronine
Tetrahydrofolate
Follitropin
Norepinephrine

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