1. This Week: Digestion and Nutrition
Next Week: Plants are Cool
5/2 Exam 3 4/27 bonus 3 4/30 homework 4 (12 pts max)

2. The Digestive System
CB 41.15

4. Photosynthesis Cellular Respiration CO2 + H2O C6H1206 + O2 CO2 + H2O
light
Photosynthesis
CO2 + H2O
C6H O2
sugar
Cellular Respiration
CO2 + H2O
C6H O2
sugar
energy
ADP
ATP

5. Cells store energy in ATP
Energy released
Energy used

6. Complex molecules are broken down and then used to build needed molecules and to produce energy

7. breaking large molecules into small molecules
Physical digestion:
liquefying of food
Chemical digestion:
breaking large molecules
into small molecules
CB 41.21

8. Carnivores have a short digestive system
Herbivores have a long digestive system
CB 41.27

9. CB 6.9

10. Carbohydrates- rings of carbon with oxygen
CB 5.7
Carbohydrates- rings of carbon with oxygen

11. CB 5.8
Carb’s-
provide energy
and
structural support

12. CB 41.28
Ruminants can release sugar from cellulose by the action of methanogens that live in their gut.

13. Cells store energy in ATP
Energy released
Energy used

14. Energy can be transferred but not created or destroyed.
Thermodynamics
Energy can be transferred but not created or destroyed.
CB 8.3

15. Energy transfer
CB 9.2

16. Cellular respiraton occurs in mitochondria
CB 6.17

17. CB 9.19
Cellular Respiration

18. CB 9.19
Cellular Respiration

19. Membranes are critical for ATP production
CB 7.7
Membranes are critical for ATP production

20. CB 7.17
Membrane transport
pump
channel

21. Diffusion: Movement from high to low concentration
CB 7.11
Diffusion: Movement from high to low concentration

22. CB 9.19
Cellular Respiration

23. protons neutrons electrons
CB 2.4
Atoms are made of:
protons neutrons electrons

24. H2O OH- H+ _ _ acid base Water is not always water CB 3.8 O H H O H H

25. [H+] Electron transport pumps H+ ions across membrane CB 9.15 [H+]
oxygen accepts electron

26. CB 9.14
The diffusion of hydrogen ions through ATP synthase creates ATP from ADP and P

27. Complex molecules are broken down and then used to build needed molecules and to produce energy