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Vitamins and Coenzymes

Vitamins and Coenzymes
Ascorbic acid acts as an

None of these
reducing agent
oxidizing agent
oxidizing and reducing agent both

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Vitamins and Coenzymes
A deficiency of niacin causes

cataract
pellagra
anemia
scurvy

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

Beta-Carotene
Thiamine
Cobalamin
Pyridoxine

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

reducing agent
all of these
oxidizing agent
antioxidants

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Vitamins and Coenzymes
Which of these molecules is vitamin H?

Folic acid
None of these
Biotin
Carnitine

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Vitamins and Coenzymes
The occurrence of metals such as iron or molybdenum in some flavoproteins can

form chelation
all of these
de-stabilize the semiquinone
stabilize the semiquinone

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