In liver cells, the inner mitochondrial membranesare about five times the area of the outer mitochondrial membranes. what purpose must this serve? a. it allows for an increased rate of glycolysis. b. it allows for an increased rate of the citric acid cycle. c. it increases the surface for oxidative phosphorylation. d.it increases the surface for substrate-level phosphorylation. e.it allows the liver cell to have fewer mitochondria