Cellular energy is obtained through breaking chemical bonds in foods like glucose. ATP is the main carrier of energy in cells, gaining phosphate groups for energy storage and losing them for energy release. Cellular respiration breaks down glucose and uses oxygen to produce ATP through glycolysis, the Krebs cycle, and the electron transport chain. Photosynthesis uses sunlight to convert carbon dioxide and water into glucose and oxygen through light-dependent and light-independent reactions in chloroplasts.

1. Cellular Energy

2. Created by Wesley R. McCammon Pisgah High School

5. I. Cellular Energy

8. ATP/ADP Cycle

10. Structure of the Mitochondrion

27. Structure of the Chloroplast

35. IV. Cellular Respiration vs. Photosynthesis Cellular Respiration Photosynthesis Takes place in- All cells Cells with chlorophyll Occurs when- All of the time In the presence of light What goes in- Carbohydrates and oxygen Carbon dioxide and water What comes out- Carbon dioxide and water Carbohydrates and oxygen Energy source- Chemical bonds Light Result- Energy is stored as ATP Energy is stored as carbohydrates Processes -Glycolysis -Krebs Cycle -Electron Transport Chain -Light Dependent Reactions -Light Independent Reactions