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Vitamins and Coenzymes

Vitamins and Coenzymes
Ascorbic acid acts as an

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

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

Kerry Mull is
Paul Berg
Albert Szent-Gyorgyi
Linus Pauling

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

pyridoxal phosphate
ferredoxin
NAD+
pyrophosphate

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Vitamins and Coenzymes
Vitamin K1 was first isolated from alfalalfa and has the phytyl side chain consisting of

nine isoprene units
four isoprene units
four isoprene units
six isoprene units

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Vitamins and Coenzymes
An enzyme, L-folate reductase reduces folic acid to

tetrahydrofolic acid
hydrofolic acid
trihydrofolic acid
dihydrofolic acid

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

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

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