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Vitamins and Coenzymes

Vitamins and Coenzymes
The absence of ascorbic acid in the human diet gives rise to

cataract
rickets
pernicious anemia
beri-beri

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Vitamins and Coenzymes
An enzyme, L-folate reductase reduces folic acid to

dihydrofolic acid
hydrofolic acid
tetrahydrofolic acid
trihydrofolic acid

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

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

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Vitamins and Coenzymes
Biotin occurs mainly in combined forms bound to protein through

ε-N-lipoyl - L-lysine
ε-N-biotinyl-L-lysine
ε-S-lysine moiety
ε-N-lysine moiety

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Vitamins and Coenzymes
Models of end-linked Osaka VI Fibrinogen dimers, a bilayer dimer is linked at

both ends by two disulfide bonds
either end via two disulfide bonds
both ends by one disulfide bond
either end via a single disulfide bond

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

Impaired taste perception
Osteoporosis
Blindness
Impaired blood clotting

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