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Vitamins and Coenzymes

Vitamins and Coenzymes
A fat-soluble vitamin that regulates blood clotting is

vitamin C
vitamin K
vitamin A
niacin

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

rickets
pernicious anemia
beri-beri
cataract

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Vitamins and Coenzymes
In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.

hydroxycobalamin
cyanocobalamin
5-6 dimethylbenzimidazole
adenine

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

animals
fishes
micro-organisms
plants

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Vitamins and Coenzymes
Lipoic acid exists in

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

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Vitamins and Coenzymes
The symptoms of retinol excess are

weakness
bone fragility
nausea
all of these

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