1. Photosynthesis

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3. Photosynthesis The process plants use to trap the sun’s energy and build carbohydrates (glucose) 6CO 2 + 6H 2 O  C 6 H 12 O 6 + 6O 2 6 carbon dioxides + 6 waters  glucose + 6 oxygens

4. Where does photosynthesis occur? Remember the Elodea lab? In Chloroplasts

5. Why are plants green? –Chlorophyll pigments in the thylakoid cannot absorb green light –All nongreen colors are absorbed and green is reflected

6. Two Types of Photosynthesis Reactions: 1. light dependent reactions 2. light independent reactions

7. Light Dependent Reaction Requires sunlight Traps sun’s energy and converts to electrons –Splits water to oxygen and hydrogen –Makes ADP to ATP

8. Light Dependent Reaction cont’d See fig.9.6b (pg.233) “Electron Transport Chain”

9. Shall we take a break here? YES NO

10. Light Independent Reaction Does not require light Uses carbon dioxide to make glucose

11. Photosynthesis Light Dependent Light Independent

12. Assignment Read pg 231-236 Make a picture flow chart on Photosynthesis (3 per group) –Must include sun, CO 2, H 2 O, glucose, O 2, chloroplast, thylakoid, chlorophyll, electron transport chain, ADP, ATP, NADP +, NADPH, light dependent/independent reaction Answer study guide questions #’s 4-20