lesson 5 part 3.

• Cellular respiration is the process that all living things use to convert glucose into energy.
• Cellular respiration extracts the energy from the bonds in glucose and converts it into a form that all living things can use.
• Glycolysis is the first step in cellular respiration.
• The Krebs Cycle is the second step in cellular respiration.
• The Electron Transport Chain is the last component of aerobic respiration and is the only part of glucose metabolism that uses atmospheric oxygen.
• Complex I in the Electron Transport Chain carries two electrons to the first complex aboard NADH.
• Complex II in the Electron Transport Chain directly receives FADH2, which does not pass through complex I.
• The compound connecting the first and second complexes to the third is ubiquinone (Q) in the Electron Transport Chain.
• Cellular respiration is the process that all living things use to convert glucose into energy.
• Complex III in the Electron Transport Chain pumps protons through the membrane and passes its electrons to cytochrome c for transport to the fourth complex of proteins and enzymes.
• Complex IV in the Electron Transport Chain reduces the oxygen to form water (H2O), and the removal of the hydrogen ions from the system contributes to the ion gradient used in the process of chemiosmosis.
• Chemiosmosis is the process that uses the free energy from the series of redox reactions just described to pump hydrogen ions (protons) across the membrane.