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Vitamins and Coenzymes

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

hydrofolic acid
tetrahydrofolic acid
trihydrofolic acid
dihydrofolic acid

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Vitamins and Coenzymes
The most prominent role that tocopherol has in in-vitro systems is as a strong

all of these
reducing agent
oxidizing agent
antioxidants

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Vitamins and Coenzymes
The disease Beriberi is due to a dietary deficiency in

vitamin B2 (riboflavin)
vitamin B6 (pyridoxine)
vitamin B12
vitamin B1 (thiamine)

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Vitamins and Coenzymes
The symptoms of retinol excess are

weakness
all of these
bone fragility
nausea

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Vitamins and Coenzymes
Vitamins are essential because the organism

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

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

plants and animals both
plants
animal
none of these

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