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Vitamins and Coenzymes

Vitamins and Coenzymes
Ascorbic acid acts as an

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

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Vitamins and Coenzymes
Vitamins are essential because the organism

can't synthesize these compounds at all
can synthesize these compounds partially
None of these
can't synthesize these compounds in the adequate amounts

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

Sulfhydryl group
Ammonia
Methyl group
Activated carbon dioxide (CO2)

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

plants
micro-organisms
animals
fishes

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

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

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Vitamins and Coenzymes
Which of the following compounds/(s) belong/(s) to the vitamin B6 group?

Pyridoxal
Pyridoxamine
All of these
Pyridoxine

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