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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of the following are reduced coenzymes?

NAD+ and FAD
Coenzyme A and ubiquinone
NADH and FADH2
ATP and GTP

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Vitamins and Coenzymes
Lipoic acid exists in

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

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Vitamins and Coenzymes
Dihydroorotate dehydrogenase contains

4 flavins and 2 atoms of iron per molecule
4 flavins and 4 atoms of iron per molecule
2 flavins and 4 atoms of iron per molecule
2 flavins and 2 atoms of iron per molecule

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

Iron
Copper
Cobalt
Zinc

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Vitamins and Coenzymes
The symptoms of retinol excess are

nausea
all of these
bone fragility
weakness

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

Ammonia
Sulfhydryl group
Activated carbon dioxide (CO2)
Methyl group

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