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Vitamins and Coenzymes

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

scurvy
cataract
anemia
beri-beri

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Vitamins and Coenzymes
The symptoms of retinol excess are

bone fragility
nausea
weakness
all of these

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

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

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Vitamins and Coenzymes
Vitamins are essential because the organism

can synthesize these compounds partially
can't synthesize these compounds in the adequate amounts
can't synthesize these compounds at all
None of these

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

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

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

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

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