1. AP Biology
Photosynthesis
Part 2

2. Valence Electrons

3. Energy and Atoms
Third energy level (shell)
Energy
absorbed
Second energy level (shell)
First energy level (shell)
Energy
lost
Atomic
nucleus

4. Photosynthesis Light Reaction

5. Non-cyclic electron flow

6. Cyclic electron flow

7. Where it is occurring?

9. More surface srea = More energy

10. Water and Photosystems 1 and 2

11. (How many electrons are in Mg’s outer shell
(How many electrons are in Mg’s outer shell?) Chlorophyll A or B molecule.

12. Answer: 2 Those 2 electrons will leave Mg and enter into the Electron Transport Chain.

13. Photosystem and collecting sunlight energy.

14. Non-cyclic electron flow

15. Redox reaction

16. H+ (protons) being pumped into the thylakoid to “build” potential energy.

17. Non-cyclic electron flow

18. Cyclic electron flow

19. Cytochrome C ALL organisms have this important proton pumping protein

20. Potential Energy

22. Turning Potential energy into Kinetic energy to make ATP

23. Chemiosmosis and Energy Coupling.

24. Photosynthesis Light Reaction converts Sunlight into chemical energy

25. Calvin Cycle uses chemical energy to build sugar