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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of these hormones is a catecholamine?

Tetraiodothyronine
Tetrahydrofolate
Follitropin
Norepinephrine

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Vitamins and Coenzymes
Lipoic acid is a co-factor of the

both (a) and (b)
di-hydroorotate dehydrogenase
pyruvic dehydrogenase
α-ketoglutaric dehydrogenase

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

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

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

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

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Vitamins and Coenzymes
The symptoms of retinol excess are

weakness
bone fragility
all of these
nausea

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Vitamins and Coenzymes
The absence of ascorbic acid in the human diet gives rise to

beri-beri
cataract
pernicious anemia
rickets

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