1. Do now activity How come animals do not need to do photosynthesis?
Where does photosynthesis happen in plant cells?
Name 2 things that plants produce from photosynthesis.
What type of macromolecule do plants produce from photosynthesis?

2. Section 2-1: Photosynthesis
Essential Question:
What do plants use for photosynthesis? What do they make?
Section 2-1: Photosynthesis
Learning Target
Use a model to illustrate how photosynthesis transforms light energy into stored chemical energy.

3. announcements Section 2 Test Scheduled for this Friday: 6/8/18
Section 2 Stamp Sheet due Friday 6/8/18
Class Syllabus due Friday 6/8/18
Pink Document due Friday 6/8/18

4. Don’t forget to chunk your notes!

5. Autotrophs: organisms that can make their own food (producer)
Overview
Autotrophs: organisms that can make their own food (producer)

6. overview
Autotrophs (producers) “produce” their own food using energy from the sun. _______ are autotrophs.
In the blank: plants
Example: Plants! They use sunlight, water and CO2 to make energy and oxygen…
PHOTOSYNTHESIS
PLANTS

7. overview Photosynthesis -- plants convert sunlight into sugar
photo = light
synthesis = to make

8. Don’t forget to chunk your notes!

9. Photosynthesis equation
light
6CO H2O  C6H12O O2
carbon dioxide + water  glucose + oxygen

10. Photosynthesis equation
Photosynthesis the process that uses energy from sunlight to transform
________ _____________ and ________
into
___________ and ___________
Carbon
Dioxide
Water
Carbon dioxide, water, oxygen, carbohydrates
Oxygen
Carbohydrates

11. Photosynthesis equation
Uses
Light energy
carbon dioxide (CO2)
water (H2O)
Makes
oxygen (O2)
glucose (C6H12O6)

13. Stomata = “mouth”

14. Don’t forget to chunk your notes!

15. Light & pigments
Plants have pigments

17. Pigments: light absorbing molecules that capture the sun’s energy
Light & pigments
Pigments: light absorbing molecules that capture the sun’s energy

18. Light & pigments
Pigments: light absorbing molecules that capture the sun’s energy
We can see reflected light. We cannot see absorbed light.

19. ROY G BIV Shortest wavelength = larger amount of energy
Longest wavelength = Least amount of energy
Shortest wavelength = larger amount of energy

21. Plants look green because chlorophyll reflects green light.

22. Chlorophyll is a pigment found in __________
Light & pigments
Chlorophyll is a pigment found in __________
PLANTS
plants

23. Chlorophyll makes plants ________ .
Light & pigments
Chlorophyll makes plants ________ .
GREEN
green

24. Light & pigments
2 types:
Chlorophyll a
Chlorophyll b

25. Light & pigments GREEN These pigments absorb red and blue light well.
They do not absorb _______ light very well.
Pigments Include:
chlorophyll a
chlorophyll b
absorbs well in red and blue but poorly in green
plants also have red , yellow and orange pigments that absorb other colors
energy is transferred to electrons in pigments when they absorb sunlight
GREEN

26. Is the color green being reflected or absorbed by plants?

28. Don’t forget to chunk your notes!

29. Photosynthesis takes place in the chloroplasts of plants
Inside a chloroplast
Photosynthesis takes place in the chloroplasts of plants

30. Inside a chloroplast Chloroplasts have two parts:
thylakoids: saclike membranes found in chloroplasts
Many thylakoids = grana
pigments capture sunlight (light-dependent reactions)

31. Inside a chloroplast Chloroplasts have two parts:
Stroma: space surrounding the thylakoids (Calvin cycle)

32. The chloroplast

33. Don’t forget to chunk your notes!

34.
reflected

35. Do now activity What are the 2 parts of the chloroplast?
What reaction takes place in each part of the chloroplast?
What gives plants their color? What does it reflect? What does it absorb?
Write out the photosynthesis equation.