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Vitamins and Coenzymes

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

pyrophosphate
pyridoxal phosphat
ferredoxin
FAD

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Vitamins and Coenzymes
β-carotene together with α-carotene, γ-carotene and cryptoxanthine are synthesized by

animal
plants
none of these
plants and animals both

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Vitamins and Coenzymes
Lipoic acid exists in

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

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Vitamins and Coenzymes
E.coli ACP has its molecular weight as around

90,000
19000
9000
39000

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Vitamins and Coenzymes
The occurrence of metals such as iron or molybdenum in some flavoproteins can

de-stabilize the semiquinone
form chelation
all of these
stabilize the semiquinone

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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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