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Vitamins and Coenzymes

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

Thiamine
Pyridoxine
Beta-Carotene
Cobalamin

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Vitamins and Coenzymes
E.coli ACP has its molecular weight as around

19000
39000
90,000
9000

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

NAD+ and FAD
NADH and FADH2
Coenzyme A and ubiquinone
ATP and GTP

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Vitamins and Coenzymes
Lipoic acid exists in

oxidized and reduced form both
reduced form
oxidized form
none of these

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

fishes
micro-organisms
animals
plants

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

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

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