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Vitamins and Coenzymes

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

39000
19000
90,000
9000

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Vitamins and Coenzymes
The reductant, NADH, transfers the electrons via a flavo-proteins to the specific disulfide (S-S) protein to form a dithiol (SH,SH) protein which converts vitamin

B12(Co2+)to B12(Co+)
B12(Co+)to B12(Co2+)
B12(Co) to B12(Co2+)
B12(Co2+)to B12(Co)

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Vitamins and Coenzymes
Which of these molecules is vitamin H?

Folic acid
None of these
Biotin
Carnitine

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

Copper
Cobalt
Zinc
Iron

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Vitamins and Coenzymes
Ascorbic acid acts as an

reducing agent
oxidizing and reducing agent both
oxidizing agent
None of these

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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
nine isoprene units
four isoprene units

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