1. Photosynthesis

2. How Energy is Obtained By Living Things.
All Energy comes from the sun.
The process by which a cell captures energy in sunlight and uses it to make food is called photosynthesis.
Nearly all living things obtain energy either directly or indirectly from the energy of sunlight captured from photosynthesis.

3. Energy from the Sun
Autotrophs: Organisms that manufacture their own food by Photosynthesis. (plants)
Organisms that cannot make its own food, animals are called a heterotrophs. Heterotrophs obtain food by eating other organisms.

4. How Photosynthesis Works
Photosynthesis is a complex process.
Plants use the energy of the sun to convert carbon dioxide (CO2) and water (H2O) into oxygen (O2) and sugar (C6H12O6)
Photosynthesis is a two stage process
Like baking a cake:
Stage 1: Combine the ingredients to make the batter
Stage 2: Bake the Batter

5. #1

6. Chloroplast from the plant cells capture energy
from sunlight.

7. Chloroplast from the plant cells capture energy
from sunlight. #2

8. Captured light energy is used to produce sugars and oxygen from water and carbon dioxide

9. #3 Chloroplast from the plant cells capture energy from sunlight.
Captured light energy is used to produce sugars and oxygen from water and carbon dioxide #3

10. Carbon dioxide enters the leaf through openings called stomata

11. #4 Chloroplast from the plant cells capture energy from sunlight.
Captured light energy is used to produce sugars and oxygen from water and carbon dioxide
Carbon dioxide enters the leaf through openings called stomata #4

12. Water enters the plant through roots and moves upward to the leaf

13. #5 Chloroplast from the plant cells capture energy from sunlight.
Captured light energy is used to produce sugars and oxygen from water and carbon dioxide #5
Carbon dioxide enters the leaf through openings called stomata
Water enters the plant through roots and moves upward to the leaf

14. Sugars produced are used by the plant cells for energy

15. #6 Chloroplast from the plant cells capture energy from sunlight.
Captured light energy is used to produce sugars and oxygen from water and carbon dioxide
Sugars produced are used by the plant cells for energy
Carbon dioxide enters the leaf through openings called stomata
Water enters the plant through roots and moves upward to the leaf #6

16. Oxygen exits through stomatoa on the underside of the leaf

17. #7 Chloroplast from the plant cells capture energy from sunlight.
Captured light energy is used to produce sugars and oxygen from water and carbon dioxide
Sugars produced are used by the plant cells for energy
Carbon dioxide enters the leaf through openings called stomata
Water enters the plant through roots and moves upward to the leaf
Oxygen exits through stomatoa on the underside of the leaf #7

18. C6H12O6 + 6O2 6CO2 + 6H2O The Photosynthesis Chemical Equation
Light Energy
6CO2 + 6H2O

19. C6H12O6 + 6O2
6CO2 + 6H2O
Carbon Dioxide

20. C6H12O6 + 6O2
6CO2 + 6H2O
Water

21. C6H12O6 + 6O2
6CO2 + 6H2O
Sugar (glucose)

22. C6H12O6 + 6O2
6CO2 + 6H2O
Oxygen

23. Chloroplast from the plant cells capture energy
from sunlight.
Captured light energy is used to produce sugars and oxygen from water and carbon dioxide
Sugars produced are used by the plant cells for energy
Carbon dioxide enters the leaf through openings called stomata
Water enters the plant through roots and moves upward to the leaf
Oxygen exits through stomatoa on the underside of the leaf
Light energy
6CO2 + 6H2O C6H12O O2