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Vitamins and Coenzymes

Vitamins and Coenzymes
A deficiency of Vitamin K results in a decreased level of

prothrombin
fibrin
thrombin
fibrinogen

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

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Vitamins and Coenzymes
The absence of ascorbic acid in the human diet gives rise to

pernicious anemia
beri-beri
rickets
cataract

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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.

adenine
5-6 dimethylbenzimidazole
cyanocobalamin
hydroxycobalamin

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Vitamins and Coenzymes
The most prominent role that tocopherol has in in-vitro systems is as a strong

oxidizing agent
antioxidants
reducing agent
all of these

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Vitamins and Coenzymes
An example of a digestive hormone is

gastrin
pepsin
amylase
lipase

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