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Biochemistry General 952d7896

Which of the following is the role of coenzyme Q (ubiquinone) in the respiratory chain?

A
It links flavoproteins to cytochrome b, the cytochrome of lowest redox potential
B
It links NAD-dependerit dehydrogenases to cytochrome b
C
It links each of the cytochromes in the respiratory chain to one another
D
It is the first step in the respiratory chain
High-Yield Explanation
Coenzyme Q collects reducing equivalents from flavoprotein complexes and passes them along the chain to the cytochromes. Reducing equivalents from a number of substrates are passed through coenzyme Q in the respiratory chain.
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