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Vitamins and Coenzymes

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

plants
fishes
micro-organisms
animals

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Vitamins and Coenzymes
In one iron-metalloflavoprotein, the iron is present as a

heme-protein
nonheme type
both (a) and (b)
flavin moiety

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Vitamins and Coenzymes
Main function of insulin hormone is to

decrease blood sugar
increase blood sugar
decrease glycogen in liver
increase glycogen in liver

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Vitamins and Coenzymes
A deficiency of thiamin produces the disease known as

anemia
cataract
scurvy
beri-beri

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Vitamins and Coenzymes
Which of these is a symptom of vitamin A deficiency?

Blindness
Impaired blood clotting
Osteoporosis
Impaired taste perception

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

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

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