1. Exit Slip
Please answer the following questions individually.
What organelle does photosynthesis take place in?
Is this organelle found in animals?

2. Chapter 6: Photosynthesis
I will be able to:
Describe the role of chlorophyll and other pigments in photosynthesis
Summarize the main events of light reactions
Describe the products of the dark reactions (calvin cycle)
Explain how atp is made during the light reactions

3. Chapter 6: Photosynthesis
Subtitle

4. Reactants Reactants are the substances that start a reaction
a. What the arrow is pointing away from

5. Reactants
A + B  C + D

6. Products Products are the substances that get made in a reaction
a. What the arrow is pointing to

7. Products
A + B  C + D

8. Question: what is photosynthesis?
Photosynthesis – the process used by plants to convert energy from the sun into chemical energy
Energy stored primarily as glucose (a carbohydrate)

9. Chapter 6: Photosynthesis

10. Question: What do plants need to do photosynthesis (reactants)?

11. Question: What do plants need to do photosynthesis (reactants)?
Carbon Dioxide
Water
Sunlight energy

12. Question: What do plants need to do photosynthesis (reactants)?
CO2
H2O
Sunlight energy

13. Question: What does photosynthesis produce (products)?

14. Question: What does photosynthesis produce (products)?
glucose
oxygen

15. Question: What does photosynthesis produce (products)?
C6H12O6 O2

16. Photosynthesis Equation

17. Reactants

18. Products

19. Look at what photosynthesis makes. How is this helpful for humans?

20. How Plants and Animals Help Each Other
Plants use CO2 and water
Plants make sugar (glucose) and oxygen
Animals use sugar (glucose) and oxygen
Animals make water and CO2

21. Question: Where does Photosynthesis occur?
Answer:

22. Question: Where does Photosynthesis occur?
Answer: photosynthesis occurs in specialized organelles called chloroplasts

23. Chloroplasts

24. Chloroplasts Thylakoids –
Discs where light dependent reaction takes place
“pancake”

25. Chloroplasts
Granum –
Term for stacks of thylakoids
“pancake stack”

26. Chloroplasts
stroma – Fluid that fills chloroplast where light independent reaction takes place “Syrup”

27. Question
Why do leaves turn color in the fall?

28. Answer
As days get shorter, leaves start to shut down photosynthesis. Because of this, chlorophyll breaks down and the other colors are exposed.

29. Pigments Chlorophyll – the main pigment for plants
Chlorophyll gives plants their green color

30. Pigments
Accessory pigments – other light absorbing pigments other than chlorophyll

31. Accessory Pigment Types
Chlorophyll B

32. Accessory Pigment Types
Carotenoids – orange and red in color

33. Accessory Pigment Types
Xanthophylls – yellow and brown in color

34. Photosynthesis 2 Phases Light dependent reaction
Light independent reaction

35. Light Dependent Reaction
Light-dependent stage - Requires light
Light absorbed on thylakoids

36. Light Dependent Reaction
Product = ATP
ATP is the energy of the cell
Oxygen created as waste product

37. Light Independent Reaction
Light-independent - doesn’t require light
Occurs in stroma

38. Light Independent Reaction
Carbon dioxide turned into glucose
Called “fixing”
Uses energy from ATP made during light dependent reaction to form glucose

39. What is the main pigment of photosynthesis?

40. What is the main pigment of photosynthesis?
Chlorophyll!

41. Light absorption
Chlorophyll is better at absorbing some color of lights than others

42. Light absorption