Which of the Following Statements About the Electron Transport Chain

Which of the following statements about the electron transport chain is true?

A) Electrons are received from NADH and FADH₂.
B) Electrons are passed from donor to recipient carrier molecules in a series of oxidation-reduction reactions.
C) Usually the terminal electron acceptor is oxygen.
D) Most of the enzymes are part of the inner mitochondrial membrane.
E) All of the above