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Vitamins and Coenzymes

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

micro-organisms
animals
fishes
plants

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Vitamins and Coenzymes
Vitamin-C is considered as a

water soluble
fat and water soluble
none of these
fat soluble

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

night blindness
keratinization
xeropthalmia
none of these

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

Thiamine
Beta-Carotene
Pyridoxine
Cobalamin

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

Pyridoxine
All of these
Pyridoxal
Pyridoxamine

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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
four isoprene units
nine isoprene units

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