In liver cells, the inner mitochondrial membranes are about five times the area of the outer mitochondrial membranes. what purpose must this serve?

The inner membrane is responsible for cellular respiration and thus, contains proteins involved in electron transport and ATP synthesis. This membrane envelops the mitochondrial matrix, where the electrons are produced (the citric acid cycle) and then travel from one protein complex to the next in the inner membrane (electron transport chain). The final electron acceptor is O2, and this ultimately forms H2O. At the same time, the electron transport chain produces ATP (oxidative phosphorylation via ATP synthase). ATP synthase uses concentration gradient of H + (formed during electron transport), power synthesis of the energy molecule-ATP. Liver cells (hepatocytes) need a lot of ATP energy, for the processes like protein and other synthesis, protein storage, the transformation of carbohydrates ...