How does the marathon runner keep going mile after mile? What gives a sprinter the energy for that final burst of speed? Cellular Respiration: Energy for Life takes students through the intricate process of cellular respiration. Special effects and high-quality graphics demonstrate how cells convert nutrients into energy. Program describes the crucial steps of aerobic and anaerobic respiration, the Krebs cycle, and the electron transport chain, as well as the concepts of kilocalories, potential energy, and kinetic energy