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Vitamins and Coenzymes

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

Cobalt
Iron
Copper
Zinc

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Vitamins and Coenzymes
Models of end-linked Osaka VI Fibrinogen dimers, a bilayer dimer is linked at

either end via a single disulfide bond
either end via two disulfide bonds
both ends by one disulfide bond
both ends by two disulfide bonds

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Vitamins and Coenzymes
Ascorbic acid acts as an

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

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Vitamins and Coenzymes
Vitamins are essential because the organism

None of these
can synthesize these compounds partially
can't synthesize these compounds in the adequate amounts
can't synthesize these compounds at all

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Vitamins and Coenzymes
A deficiency of niacin causes

pellagra
cataract
anemia
scurvy

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

animals
fishes
micro-organisms
plants

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