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Vitamins and Coenzymes

Vitamins and Coenzymes
A deficiency of niacin causes

anemia
pellagra
cataract
scurvy

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Vitamins and Coenzymes
The vitamin niacin is part of the __________ molecule.

NAD+
pyrophosphate
pyridoxal phosphate
ferredoxin

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Vitamins and Coenzymes
Ascorbic acid acts as an

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

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

Copper
Zinc
Cobalt
Iron

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Vitamins and Coenzymes
E.coli ACP has its molecular weight as around

39000
9000
90,000
19000

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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.

cyanocobalamin
5-6 dimethylbenzimidazole
hydroxycobalamin
adenine

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