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Vitamins and Coenzymes

Vitamins and Coenzymes
The vitamin niacin is part of the __________ molecule.

ferredoxin
pyridoxal phosphate
NAD+
pyrophosphate

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

beri-beri
cataract
scurvy
anemia

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

xeropthalmia
night blindness
keratinization
none of these

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Vitamins and Coenzymes
Dihydroorotate dehydrogenase contains

4 flavins and 2 atoms of iron per molecule
2 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
In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.

adenine
cyanocobalamin
hydroxycobalamin
5-6 dimethylbenzimidazole

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Vitamins and Coenzymes
A deficiency of niacin causes

scurvy
pellagra
anemia
cataract

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