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Vitamins and Coenzymes

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

Iron
Copper
Cobalt
Zinc

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Vitamins and Coenzymes
Main function of insulin hormone is to

increase blood sugar
increase glycogen in liver
decrease blood sugar
decrease glycogen in liver

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Vitamins and Coenzymes
Lipoic acid is a co-factor of the

α-ketoglutaric dehydrogenase
both (a) and (b)
pyruvic dehydrogenase
di-hydroorotate dehydrogenase

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

night blindness
xeropthalmia
keratinization
none of these

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Vitamins and Coenzymes
The vitamin niacin is part of the __________ molecule.

pyrophosphate
pyridoxal phosphate
NAD+
ferredoxin

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Vitamins and Coenzymes
Models of end-linked Osaka VI Fibrinogen dimers, a bilayer dimer is linked at

both ends by two disulfide bonds
both ends by one disulfide bond
either end via two disulfide bonds
either end via a single disulfide bond

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