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Vitamins and Coenzymes

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

Copper
Zinc
Cobalt
Iron

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

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

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Vitamins and Coenzymes
Which of these molecules is vitamin H?

None of these
Biotin
Carnitine
Folic acid

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Vitamins and Coenzymes
The symptoms of retinol excess are

weakness
bone fragility
nausea
all of these

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

beri-beri
cataract
pernicious anemia
rickets

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Vitamins and Coenzymes
Ascorbic acid acts as an

oxidizing agent
oxidizing and reducing agent both
None of these
reducing agent

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