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Vitamins and Coenzymes

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

19000
9000
39000
90,000

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Vitamins and Coenzymes
What metal ion is specifically bound by vitamin B12?

Zinc
Copper
Cobalt
Iron

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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
six isoprene units
nine isoprene units
four isoprene units

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

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

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Vitamins and Coenzymes
Vitamins are essential because the organism

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

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

keratinization
xeropthalmia
none of these
night blindness

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