1. Do now activity #2 What do pigments do?
What is the pigment that makes plants green?
Where in a plant cell can you find the “green pigment”?
What are the two parts of a chloroplast?
Write down the photosynthesis equation.

2. Section 3-2: Light Dependent & Calvin Cycle
Essential Question
What does the Light Dependent Reaction produce? What does the Calvin Cycle produce?
Section 3-2: Light Dependent & Calvin Cycle
Learning Target
Use a model to illustrate how photosynthesis transforms light energy into stored chemical energy.

3. announcements Biology Tutoring this week: Lunch B (Tuesday & Thursday)
7:00AM (Monday – Friday)
After school Biology Tutoring: Thursday
You must sign up for retakes during Biology Tutoring. 7:00AM retakes only.
Lab this Friday. Students w/o pre-lab will not participate.

4. Color Printer Paper = 5 Points
announcements
Available Extra Credit:
Tissue Box = 2 Points
Box of Soda Straws = 2 Points
Color Printer Paper = 5 Points

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

6. Light Dependent Reactions
thylakoids
LDR happens in the _________ .

7. Light Dependent Reactions
Produces O2
Converts ADP into ATP

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

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

11. 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

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

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

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

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

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

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

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

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

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

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

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

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

25. Calvin Cycle: How it works
Glucose is made

26. 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