respiration

• The electron transport chain is the final step of cellular respiration and involves the transfer of electrons to generate ATP.
• Glycolysis is anaerobic and produces two molecules of ATP per glucose molecule.
• Krebs cycle occurs in the mitochondria and generates NADH, FADH2, and CO2 from pyruvate.
• Electron Transport Chain (ETC) takes place on the inner membrane of the mitochondrion and uses energy released by H+ pumping to produce ATP.