55. A major function of the mitochondrial inner membrane is the conversion of energy from electrons to the stored energy of the phosphate bond in ATP. To accomplish this function, membrane must have all of the following features except (A) the electron transport chain of proteins. (B) proteins to accept electrons from NADH. (C) high permeability to protons. .(D) integral, transverse ATP synthase. (E) proton pumps embedded in the membrane.