1. Do now activity Explain what photosynthesis is.
Where does photosynthesis take place?
What is the name of the carbohydrate that plants make using light energy?
What is the difference between stroma and thylakoid?
What is the name of the pigment that makes plants green?
Write the photosynthesis EQUATION.

2. Section 2-2: LDR & Calvin Cycle
Essential Question
What does the Light Dependent Reaction produce? What does the Calvin Cycle produce?
Learning Target
Use a model to illustrate how photosynthesis transforms light energy into stored chemical energy.
Section 2-2: LDR & Calvin Cycle

3. announcements Biology Tutoring schedule W&F @ 7:00AM Section 2 Quiz 1
Scheduled for Friday: 9/22/17
Section 2 Lab
Scheduled for Wednesday: 9/27/17
Class website will be updated today

4. Available Extra Credit
announcements
Available Extra Credit
1 Ream of Colored Printer Paper = 1 Class Pass (Limit 1 per student per chapter)

5. Don’t forget to chunk your notes!

6. overview Photosynthesis occurs in the Chloroplast of a plant cell.
Two main reactions:
1. Light-dependent
2. Calvin Cycle

7. Don’t forget to chunk your notes!

8. Light Dependent Reactions
thylakoids
thylakoid
LDR happens in the _________ .

9. Light Dependent Reactions
Produces O2
Converts ADP into ATP
Converts NADP+ into NADPH

10. Light Dependent Reactions
NADPH is an electron carrier.
(nicotinamide adenine dinucleotide phosphate)
It can accept and transfer electrons

11. Don’t forget to chunk your notes!

12. Parts of the Light Dependent reaction
Photosystem 2
Electron Transport Chain
Photosystem 1
Hydrogen Ion Movement
ATP Formation

14. Don’t forget to chunk your notes!

15. LDR: How it works Photosystem 2 Electron Transport Chain Photosystem 1
Hydrogen Ion Movement
ATP Formation

16. LDR: How it works A. Photosystem 2 Light is absorbed
Energy goes to electrons
Electrons pass through ETC
Water broken up into electrons, H+, and O2

18. “Enzyme”
To the ETC

19. LDR: How it works Photosystem 2 Electron Transport Chain Photosystem 1
Hydrogen Ion Movement
ATP Formation

20. LDR: How it works
B. Electron Transport Chain Electrons move through ETC to Photosystem 1

22. Welcome to “ETC Freeway”
To the Photosystem 1
From Photosystem 2
Welcome to “ETC Freeway”

23. LDR: How it works Photosystem 2 Electron Transport Chain Photosystem 1
Hydrogen Ion Movement
ATP Formation

24. LDR: How it works C. Photosystem 1 (I) Light is absorbed
Energy goes to electrons
Electrons used to make: NADP+  NADPH

26. “NADPH”

27. LDR: How it works Photosystem 2 Electron Transport Chain Photosystem 1
Hydrogen Ion Movement
ATP Formation

28. LDR: How it works D. Hydrogen Ion Movement
Inner thylakoid membrane fills up with H+

31. LDR: How it works Photosystem 2 Electron Transport Chain Photosystem 1
Hydrogen Ion Movement
ATP Formation

32. LDR: How it works
E. ATP Formation H+ pass through ATP synthase to make: ADP  ATP

34. ATP Synthase

35. To the Stroma!

38. Don’t forget to chunk your notes!

39. Photosynthesis occurs in the Chloroplast of a plant cells.
Two main reactions:
1. Light-dependent
2. Calvin Cycle

40. The Calvin Cycle
Reactions taking place in the _____ that do not need light. The Calvin Cycle uses ATP and NADPH to make _____.
stroma
sugar

41. Don’t forget to chunk your notes!

42. Calvin Cycle: How it works
6 CO2 molecules enter the cycle

43. Calvin Cycle: How it works
Energy from ATP and NADPH are used

44. Calvin Cycle: How it works
Glucose is made

45. Don’t forget to chunk your notes!

46. Factors Affecting Photosynthesis
Water
Amount can slow or stop photosynthesis
Temperature
Photosynthesis depends on enzymes that function best between 0ºC and 35ºC
Light intensity
Increases photosynthesis until maximum rate reached

48. Don’t forget to chunk your notes!