1. Cellular Energy Photosynthesis

2. Energy in Living Systems I.All organisms need energy I.The sun is the first and largest source of energy II.Autotrophs I.Organisms that gather their own energy III.Heterotrophs I.Organisms that gather energy from other organisms

3. Metabolism –Set of all chemical reactions that occur in the body –Chemical Reactions Processes that result in the changing of substances Adenosine Triphosphate –ATP –Energy Money in Cell

4. Photosynthesis – Sun Energy Photosynthesis In the chloroplasts Steps Absorption of Light Energy is captured from the sunlight Electron Transport Chain Light energy is converted to chemical energy  ATP Calvin Cycle ATP powers the formation of organic compounds

5. Wrap-Up The ingredients are light, carbon dioxide and water The end result is sugar and oxygen (which is released into the atmosphere)