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Vitamins and Coenzymes

Vitamins and Coenzymes
Ascorbic acid acts as an

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

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Vitamins and Coenzymes
Vitamin-C is considered as a

none of these
fat and water soluble
fat soluble
water soluble

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

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

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

Methyl group
Activated carbon dioxide (CO2)
Sulfhydryl group
Ammonia

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

keratinization
none of these
night blindness
xeropthalmia

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Vitamins and Coenzymes
What metal ion is specifically bound by vitamin B12?

Iron
Copper
Cobalt
Zinc

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