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Vitamins and Coenzymes

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

beri-beri
scurvy
cataract
pernicious anemia

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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
four isoprene units
nine isoprene units
six isoprene units

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Vitamins and Coenzymes
An early sign of retinol deficiencies in man is

keratinization
night blindness
xeropthalmia
none of these

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Vitamins and Coenzymes
The symptoms of retinol excess are

weakness
bone fragility
all of these
nausea

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

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

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

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

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