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Vitamins and Coenzymes

Vitamins and Coenzymes
An example of a digestive hormone is

gastrin
lipase
amylase
pepsin

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Vitamins and Coenzymes
Vitamin-C is considered as a

water soluble
fat and water soluble
none of these
fat soluble

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Vitamins and Coenzymes
The prosthetic group biotin is a carrier of which type of molecule?

Activated carbon dioxide (CO2)
Methyl group
Ammonia
Sulfhydryl group

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Vitamins and Coenzymes
Vitamins are essential because the organism

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

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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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Vitamins and Coenzymes
Lipoic acid exists in

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

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