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VITAMINS AND COENZYMES

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

micro-organisms
fishes
animals
plants

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

ATP and GTP
Coenzyme A and ubiquinone
NAD+ and FAD
NADH and FADH2

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

cataract
rickets
beri-beri
pernicious anemia

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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
The prosthetic group biotin is a carrier of which type of molecule?

Methyl group
Ammonia
Activated carbon dioxide (CO2)
Sulfhydryl group

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