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Vitamins and Coenzymes

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

pyridoxal phosphat
ferredoxin
pyrophosphate
FAD

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

Thiamine
Pyridoxine
Beta-Carotene
Cobalamin

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Vitamins and Coenzymes
Ascorbic acid acts as an

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

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Vitamins and Coenzymes
Who discovered vitamin C (ascorbic acid)?

Paul Berg
Kerry Mull is
Linus Pauling
Albert Szent-Gyorgyi

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Vitamins and Coenzymes
An early sign of retinol deficiencies in man is

none of these
xeropthalmia
keratinization
night blindness

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

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

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