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Vitamins and Coenzymes

Vitamins and Coenzymes
Acyl carrier protein (ACP) plays an important role in the biosynthesis of

sugars
carbohydrates
amino acids
fatty acids

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Vitamins and Coenzymes
Which of these is a vitamin A precursor?

Beta-Carotene
Thiamine
Cobalamin
Pyridoxine

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Vitamins and Coenzymes
Dihydroorotate dehydrogenase contains

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

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Vitamins and Coenzymes
Vitamins are essential because the organism

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

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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
all of these
stabilize the semiquinone

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Vitamins and Coenzymes
Which of these molecules is vitamin H?

Carnitine
Folic acid
Biotin
None of these

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