Which of the following statements is TRUE?
A) Ubiquinone is a small, hydrophobic protein containing a metal group that acts as an electron carrier.
B) A 2Fe2S iron-sulfur center carries one electron, whereas a 4Fe4S iron-sulfur center carries two electrons.
C) Iron-sulfur centers generally have a higher redox potential than do cytochromes.
D) Mitochondrial electron carriers with the highest redox potential generally contain copper ions and/or heme groups.
Correct Answer:
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