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Vitamins and Coenzymes

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

animals
micro-organisms
plants
fishes

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

Kerry Mull is
Albert Szent-Gyorgyi
Paul Berg
Linus Pauling

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

night blindness
xeropthalmia
keratinization
none of these

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Vitamins and Coenzymes
Lipoic acid is a co-factor of the

di-hydroorotate dehydrogenase
pyruvic dehydrogenase
α-ketoglutaric dehydrogenase
both (a) and (b)

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

Pyridoxine
Thiamine
Cobalamin
Beta-Carotene

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Vitamins and Coenzymes
The disease Beriberi is due to a dietary deficiency in

vitamin B2 (riboflavin)
vitamin B1 (thiamine)
vitamin B12
vitamin B6 (pyridoxine)

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