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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of the following are reduced coenzymes?

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

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Vitamins and Coenzymes
The disease Beriberi is due to a dietary deficiency in

vitamin B6 (pyridoxine)
vitamin B2 (riboflavin)
vitamin B1 (thiamine)
vitamin B12

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Vitamins and Coenzymes
Main function of insulin hormone is to

decrease blood sugar
increase blood sugar
increase glycogen in liver
decrease glycogen in liver

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

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

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Vitamins and Coenzymes
Which of these hormones is a catecholamine?

Tetraiodothyronine
Follitropin
Norepinephrine
Tetrahydrofolate

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

Copper
Zinc
Cobalt
Iron

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