2. Where does all that glucose come from?

4. CO 2 radiant energy Photosynthesis glucose

5. In the process of photosynthesis, plants convert radiant energy from the sun into chemical energy in the form of glucose (sugar)

8. That’s a lot of photosynthesis

9. So is this!

10. O2O2 glucose CO 2 H2OH2O H+H+ H+H+ Energy CO 2 + H 2 O + energy  glucose + O 2 Photosynthesis

11. glucose + O 2  CO 2 + H 2 O + energy CO 2 H2OH2O H+H+ H+H+ Energy O2O2 glucose Cellular RespirationPhotosynthesis

13. vascular bundle palisade mesophyll spongy mesophyll epidermis cuticle stomate EpidermisMesophyllVascular Bundles

14. O2O2 CO 2 H2OH2O

15. O2O2 H2OH2O

16. nucleus chloroplast cytosol cell wall

17. nucleus chloroplast cytosol cell wall

18. Outer membrane Inner membrane Stroma Thylakoid Granum

19. Thylakoid (contains chlorophyll) Stroma Lamella (connects grana) Thylakoid Space (Lumen)

20. PHOTOSYNTHESIS Light ReactionsDark Reactions makes NADPH ATP some glucose

21. PHOTOSYNTHESIS Light ReactionsDark Reactions makes NADPH ATP some glucose DON’T BE FOOLED!! Both light and dark reactions occur during the day. The “Dark” reactions don’t REQUIRE light while the “Light” reactions do!

22. PHOTOSYNTHESIS Light Dependent ReactionsLight Independent Reactions makes NADPH ATP some glucose

24. Photon

27. Chlorophyll a Chlorophyll b absorbed Absorbance:

28. Chlorophyll a Chlorophyll b GREEN What do we see? Reflection: reflected

31.  Carotenoids  Phycobilins  Xanthophylls

34. a Primary Electron Acceptor

35. Thylakoid PS IPS IIP700P680

36. Thylakoid PS IPS II aa a Electron Acceptor P

37. PS II High Low Energy H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H2OH2O H+H+ H+H+ O2O2 H+H+ H+H+ H+H+ H+H+ P Stroma Thylakoid Lumen Thylakoid Membrane

38. PS II High Low Energy H+H+ H+H+ H+H+ H+H+ Thylakoid Membrane Stroma Thylakoid Lumen E T C H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ PS I O2O2 ATP P  Electrons are re-energized at photosystem I  The high energy electrons are involved in a redox reaction to generate the high energy NADPH molecule  The proton gradient is used to generate ATP through ATP Synthase

39. PS II High Low Energy H+H+ H+H+ H+H+ H+H+ Thylakoid Membrane Stroma Thylakoid Lumen E T C H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ PS I ATP NADP + NADPH

40. ATP NADPH

41. High Low Energy H+H+ H+H+ H+H+ H+H+ Membrane E T C H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ PS I ATP P  Simple organisms like bacteria are able to meet their energy demands by using PS I alone to generate ATP  In this way they generate cellular energy without synthesizing glucose.

42. High Low Energy H+H+ H+H+ H+H+ H+H+ Membrane E T C H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ H+H+ PS I ATP P