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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of the following are reduced coenzymes?

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

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Vitamins and Coenzymes
β-carotene together with α-carotene, γ-carotene and cryptoxanthine are synthesized by

plants
none of these
plants and animals both
animal

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

Thiamine
Pyridoxine
Cobalamin
Beta-Carotene

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

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

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Vitamins and Coenzymes
Who discovered vitamin C (ascorbic acid)?

Paul Berg
Linus Pauling
Kerry Mull is
Albert Szent-Gyorgyi

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Vitamins and Coenzymes
Dihydroorotate dehydrogenase contains

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

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