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Vitamins and Coenzymes

Vitamins and Coenzymes
Vitamin B12 is useful in the prevention and treatment of

cataract
scurvy
beri-beri
pernicious anemia

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

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

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

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Vitamins and Coenzymes
Vitamin B12 (Cobalamin) is only synthesized by

plants
micro-organisms
fishes
animals

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Vitamins and Coenzymes
Lipoic acid is a co-factor of the

both (a) and (b)
α-ketoglutaric dehydrogenase
di-hydroorotate dehydrogenase
pyruvic dehydrogenase

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Vitamins and Coenzymes
The disease Beriberi is due to a dietary deficiency in

vitamin B6 (pyridoxine)
vitamin B2 (riboflavin)
vitamin B12
vitamin B1 (thiamine)

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