Powerpoint notes for lesson two on cellular respiration with student follow-along, "fill-in-the-blank" style graphic organizer and "Exit Ticket" formative assessment with answer key. Covers the three stages of cellular respiration, glycolysis, the Krebs Cycle (Citric Acid Cycle), and the Electron Transport Chain. Addresses the relationship between cellular respiration and photosynthesis. Fourth of four lessons on energy in the cell. Students follow along with powerpoint on their own graphic org