1. Photosynthesis

2. What is it? Photo – light Synthesis – to make The process of converting light energy to chemical energy and storing it as sugar.

3. The Equation CO 2 + H 2 0  C 6 H 12 O 6 + O 2

4. Where does it occur? In the Chloroplasts – Chloroplasts contain chlorophyll (pigment) that give plants their green color

6. Parts of Photosynthesis Light Reactions – Takes place in the Thylakoid Membrane Use – Light, Water Produce – Oxygen, NADPH, ATP Calvin Cycle (Dark Reactions) – Takes place in the Stroma Use – CO 2, NADPH, ATP Produce - Sugar

7. The Light Reactions In the Thylakoid Membrane Require direct light Use – H 2 O Produce – O 2, NADPH, ATP Electron Transport Chain

8. The Light Reactions Steps – Light strikes photosystem Photosystem – collection of pigments – Electron becomes “excited” and moves through the electron transport chain – H 2 O replaces electron and breaks into H + and O O + O = O 2 – Electron movement allows for ATP to be made – NADP + accepts electron and joins with H + to make NADPH

9. The Calvin Cycle In the Stroma Do not require direct light Use - CO 2, NADPH, ATP Produce - Sugar Cycle - continuous

10. The Calvin Cycle Steps – Carbon Fixation CO 2 goes into the cycle and is “fixed” to become sugar by Rubisco – Most important enzyme on earth – Reduction ATP and NADPH go into cycle Sugar is produced – Regeneration Rubisco is regenerated to accept more CO 2