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Vitamins and Coenzymes

Vitamins and Coenzymes
The symptoms of retinol excess are

nausea
all of these
weakness
bone fragility

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

cataract
rickets
pernicious anemia
beri-beri

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Vitamins and Coenzymes
Biotin occurs mainly in combined forms bound to protein through

ε-N-lysine moiety
ε-S-lysine moiety
ε-N-biotinyl-L-lysine
ε-N-lipoyl - L-lysine

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

fishes
plants
animals
micro-organisms

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

Sulfhydryl group
Ammonia
Activated carbon dioxide (CO2)
Methyl group

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Vitamins and Coenzymes
Which of these is a vitamin A precursor?

Beta-Carotene
Pyridoxine
Thiamine
Cobalamin

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