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Vitamins and Coenzymes

Vitamins and Coenzymes
An example of a digestive hormone is

pepsin
lipase
amylase
gastrin

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

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

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

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Vitamins and Coenzymes
The occurrence of metals such as iron or molybdenum in some flavoproteins can

stabilize the semiquinone
form chelation
de-stabilize the semiquinone
all of these

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Vitamins and Coenzymes
The symptoms of retinol excess are

all of these
bone fragility
nausea
weakness

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

Copper
Iron
Cobalt
Zinc

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