Exercise: Vitamins And Coenzymes

Questions for: Vitamins And Coenzymes

β-carotene together with α-carotene, γ-carotene and cryptoxanthine are synthesized by
A:
plants
B:
animal
C:
plants and animals both
D:
none of these
Answer: A
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Lipoic acid is a co-factor of the
A:
pyruvic dehydrogenase
B:
α-ketoglutaric dehydrogenase
C:
both (a) and (b)
D:
di-hydroorotate dehydrogenase
Answer: C
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Biotin occurs mainly in combined forms bound to protein through
A:
ε-N-lysine moiety
B:
ε-S-lysine moiety
C:
ε-N-biotinyl-L-lysine
D:
ε-N-lipoyl - L-lysine
Answer: A
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The most prominent role that tocopherol has in in-vitro systems is as a strong
A:
antioxidants
B:
reducing agent
C:
oxidizing agent
D:
all of these
Answer: A
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The vitamin riboflavin is part of the __________ molecule.
A:
ferredoxin
B:
FAD
C:
pyridoxal phosphat
D:
pyrophosphate
Answer: B
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