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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of these is a symptom of vitamin A deficiency?

Impaired taste perception
Blindness
Impaired blood clotting
Osteoporosis

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

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

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

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

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

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

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Vitamins and Coenzymes
Which of these hormones is a catecholamine?

Norepinephrine
Tetrahydrofolate
Follitropin
Tetraiodothyronine

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Vitamins and Coenzymes
Which of these molecules is vitamin H?

Carnitine
Folic acid
None of these
Biotin

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