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Vitamins and Coenzymes

Vitamins and Coenzymes
A deficiency of thiamin produces the disease known as

beri-beri
cataract
anemia
scurvy

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

keratinization
none of these
xeropthalmia
night blindness

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Vitamins and Coenzymes
Vitamin B12 (Cobalamin) is only synthesized by

plants
animals
micro-organisms
fishes

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Vitamins and Coenzymes
A deficiency of Vitamin K results in a decreased level of

prothrombin
thrombin
fibrinogen
fibrin

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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
six isoprene units
four isoprene units

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

Copper
Cobalt
Zinc
Iron

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