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VITAMINS AND COENZYMES

Vitamins and Coenzymes
Lipoic acid exists in

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

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Vitamins and Coenzymes
Vitamin B12 is useful in the prevention and treatment of

scurvy
beri-beri
cataract
pernicious anemia

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Vitamins and Coenzymes
An example of a digestive hormone is

lipase
gastrin
pepsin
amylase

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Vitamins and Coenzymes
In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.

hydroxycobalamin
adenine
cyanocobalamin
5-6 dimethylbenzimidazole

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

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