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Vitamins and Coenzymes

Vitamins and Coenzymes
Lipoic acid exists in

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

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

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

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

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

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

Zinc
Iron
Copper
Cobalt

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

reducing agent
oxidizing agent
all of these
antioxidants

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

Sulfhydryl group
Methyl group
Activated carbon dioxide (CO2)
Ammonia

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