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Vitamins and Coenzymes

Vitamins and Coenzymes
What metal ion is specifically bound by vitamin B12?

Cobalt
Zinc
Iron
Copper

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Vitamins and Coenzymes
Which of these molecules is vitamin H?

None of these
Folic acid
Biotin
Carnitine

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

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

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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
six isoprene units
four isoprene units
nine isoprene units

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

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

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Vitamins and Coenzymes
The absence of ascorbic acid in the human diet gives rise to

pernicious anemia
cataract
beri-beri
rickets

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