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Vitamins and Coenzymes

Vitamins and Coenzymes
An early sign of retinol deficiencies in man is

night blindness
none of these
keratinization
xeropthalmia

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Vitamins and Coenzymes
A deficiency of thiamin produces the disease known as

beri-beri
anemia
scurvy
cataract

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Vitamins and Coenzymes
Selenium is an essential component of the enzyme glutathione peroxidase which

reduces toxic hydoperoxycompounds in tissues
scavenges toxic hydoperoxycompounds in tissues
None of these
oxidizes toxic hydoperoxycompounds in tissues

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

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

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Vitamins and Coenzymes
Lipoic acid exists in

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

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Vitamins and Coenzymes
A deficiency of Vitamin K results in a decreased level of

prothrombin
thrombin
fibrin
fibrinogen

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