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Vitamins and Coenzymes

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

sugars
fatty acids
amino acids
carbohydrates

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

Osteoporosis
Impaired taste perception
Impaired blood clotting
Blindness

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Vitamins and Coenzymes
Lipoic acid exists in

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

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

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

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Vitamins and Coenzymes
Dihydroorotate dehydrogenase contains

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

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Vitamins and Coenzymes
Vitamin K1 was first isolated from alfalalfa and has the phytyl side chain consisting of

nine isoprene units
six isoprene units
four isoprene units
four isoprene units

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