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Vitamins and Coenzymes

Vitamins and Coenzymes
A deficiency of niacin causes

anemia
pellagra
cataract
scurvy

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Vitamins and Coenzymes
Selenium is an essential component of the enzyme glutathione peroxidase which

None of these
reduces toxic hydoperoxycompounds in tissues
scavenges toxic hydoperoxycompounds in tissues
oxidizes toxic hydoperoxycompounds in tissues

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Vitamins and Coenzymes
Vitamin B12 is useful in the prevention and treatment of

pernicious anemia
cataract
scurvy
beri-beri

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Vitamins and Coenzymes
Lipoic acid exists in

oxidized form
none of these
reduced form
oxidized and reduced form both

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Vitamins and Coenzymes
Vitamin K1 was first isolated from alfalalfa and has the phytyl side chain consisting of

four isoprene units
nine isoprene units
four isoprene units
six isoprene units

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

oxidizing agent
reducing agent
all of these
antioxidants

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