1. Photosynthesis Notes
October 12th

2. Socrative Student space race
Watch video:

3. 15 minutes
Color the arrows as shown below. When done coloring, cut out each arrow & leaf.

4. Cut out the pieces
Glue the bottom piece down in journal.
Glue the top piece on the bottom piece, but only put glue towards the stem part. You want to be able to fold the top piece back and see inside the leaf.
Add the arrows & labels as shown on the next slide.

6. Write Equation

7. The ultimate source for all food energy is the sun
PHOTOSYNTHESIS
The ultimate source for all food energy is the sun

8. AUTOTROPHS - plants and some microscopic organisms that trap sunlight energy to make food
PHOTOSYNTHESIS - process using energy from sunlight to convert water H2O and carbon dioxide CO2 into high-energy carbohydrates (sugars and starches) with O2 as a waste product.

10. Cells with chlorophyll Where do you get the energy?
In?
CO2 and H2O
Out?
C6H12O6 and O2
Where do you get the energy?
Sunlight
Result?
ENERGY STORED

11. Photosynthesis +
6 CO2 + 6 H2O
C6H12O6 + 6 O2

12. made of the visible spectrum
Photosynthesis requires light and chlorophyll
Sunlight = white light
made of the visible spectrum
R O Y G B I V

13. PIGMENTS – light absorbing molecule
CHLOROPHYLL – principal pigment in plants (found in chloroplast)
Absorbs red and blue light, reflects green
Two types: α and β

14. Chloroplasts

15. Surrounded by 2 lipid bilayer membranes
Thylakoid = stacks of membranes
site of light- dependent reactions
Stroma – fluid of chloroplast
site of Calvin Cycle

16. 2 Stages of Photosynthesis
Light - dependent
Calvin cycle (Light – independent)

18. 1. Light - dependent Reactions
Use energy from light to produce ATP and NADPH
Produces O2 gas
In the thylakoid

19. PHOTOLYSIS – splitting of H2O to help make an energy source for the Calvin cycle (releases O2)
Energy is carried by NADP+ (changed to NADPH) and ADP (changed into ATP)

21. Calvin Cycle

22. AKA: Light – independent reaction
Calvin cycle
AKA: Light – independent reaction

23. Uses energy from ATP and NADPH to produce high energy sugars
carbohydrates – glucose, starches, cellulose
In the stroma

24. Electron
Transport
Chain

25. Electrons within the chlorophyll absorb energy
Passed along series of molecules in thylakoid
Energy is stored in bonds of ATP (used in Calvin Cycle)