Which of the Following is NOT an Electron Acceptor in the Mitochondrial

Question

Which of the following is NOT an electron acceptor in the mitochondrial respiratory chain?
A) FMN
B) FAD
C) Fe3+
D) Cu2+
E) CoQH2

Accepted Answer

CoQH2, also known as ubiquinol, is a reduced form of Coenzyme Q10 (CoQ) and acts as an electron donor in the mitochondrial respiratory chain, not an electron acceptor.