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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of these molecules is vitamin H?

Folic acid
Carnitine
None of these
Biotin

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

thrombin
fibrin
prothrombin
fibrinogen

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Vitamins and Coenzymes
An example of a digestive hormone is

pepsin
amylase
lipase
gastrin

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Vitamins and Coenzymes
Selenium is an essential component of the enzyme glutathione peroxidase which

reduces toxic hydoperoxycompounds in tissues
scavenges toxic hydoperoxycompounds in tissues
None of these
oxidizes toxic hydoperoxycompounds in tissues

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

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

Sulfhydryl group
Activated carbon dioxide (CO2)
Methyl group
Ammonia

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