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Vitamins and Coenzymes

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

Pyridoxine
Cobalamin
Thiamine
Beta-Carotene

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Vitamins and Coenzymes
Biotin occurs mainly in combined forms bound to protein through

ε-N-lysine moiety
ε-N-biotinyl-L-lysine
ε-S-lysine moiety
ε-N-lipoyl - L-lysine

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Vitamins and Coenzymes
The symptoms of retinol excess are

bone fragility
nausea
all of these
weakness

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

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

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

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

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

9000
90,000
19000
39000

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