Biochemistry 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 💡 Explanation Which of the following is the role of coenzyme Q (ubiquinone) in the respiratory chain? ✓ Correct Answer: A. It links flavoproteins to cytochrome b, the cytochrome of lowest redox potential