Photosynthesis is the process by which plants, algae, and some bacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of sugars like glucose. It involves two sets of reactions - light-dependent reactions which use energy from sunlight to make ATP and NADPH, and light-independent reactions known as the Calvin cycle where carbon from carbon dioxide is fixed into organic carbon compounds like glucose using energy from the ATP and NADPH produced in the light reactions. Some plants like cacti use CAM photosynthesis which helps them conserve water.

2. Photosynthesis a process that changes carbon dioxide into compounds and sugars using energy from the sunlight

3. Key Terms Photosynthesis Calvin Cycle Light-dependent reactions Light-independent reactions CAM photosynthesis Photoautotroph Electron transport chain Mesophyll Carbon fixation Chlorophyll Chloroplast Thylakoid lumen

4. Equation for Photosynthesis Light 6CO₂ + 6H₂O->C₆H₁₂O₆ + 6O₂ Carbon Water Sugar Oxygen Dioxide

5. Wikipedia

6. Light Reactions Light-dependent Light-independent (The Calvin Cycle, CAM photosynthesis)

7. Light-dependent Reactions Wikipedia

9. The Calvin Cycle Wikipedia

10. CAM Photosynthesis Wikipedia

11. Relationship between autotrophs and heterotrophs Wikipedia

12. References Photosynthesis (2010). Wikipedia. 7 October 2010. Wikipedia. Retrieved from http://en.wikipedia.org/wiki/Photosynthesis