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Question

Which one is important in electron transport system?

A
Ubiquinone
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B
Acetyl CoA
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C
Tricarboxylic acid
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D
Ferricyanide
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Solution

The correct option is A Ubiquinone
Ubiquinone is an organic molecule (not a protein) dissolved in the hydrophobic region of the inner membrane of the mitochondrion. Both complexes I and complex II pass their electrons to a small, mobile electron carrier called ubiquinone Q. Reduction takes place to form QH2 and it delivers electrons to complex III.

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