1. (Aerobic Respiration)
Cell Respiration
(Aerobic Respiration)

2. How do we get energy from food?
Cell Respiration – mitochondria break down food to make ATP (energy)
Formula:
1 glucose + 6 oxygen  6 carbon dioxide + 6 water + energy
C6H12O6 + 6O > 6CO2 + 6H20 + energy (36ATP)

3. 3 Stages of Cell Respiration

4. 3 Stages of Cell Respiration:
Glycolysis
Anaerobic – no oxygen required
Occurs in the cytoplasm
Glucose  2 pyruvic acids
Net ATP production = 2

5. 3 Stages of Cell Respiration:
2. Citric Acid Cycle (a.k.a. Krebs Cycle)
Occurs in mitochondria, requires oxygen (aerobic)
Net ATP production = 2

6. 3 Stages of Cell Respiration:
3. Electron Transport Chain
Occurs in mitochondria, requires oxygen (aerobic)
Net ATP = 32

7. Things that increase cell respiration
More food (glucose)
More oxygen
More mitochondria
More folds in the mitochondria (surface area)

8. * If oxygen is not available, cell undergoes fermentation after glycolysis.

9. 2 Types of Fermentation

10. 2 Types of Fermentation:
1. Alcoholic – yeast cells produce CO2 and ethyl alcohol (a.k.a. ethanol).

11. Products that use alcoholic fermentation
Beer
Wine
Breads

12. 2 Types of Fermentation:
2. Lactic Acid – lactic acid builds up in muscles when they do not get enough oxygen  muscle fatigue

13. Products that use lactic acid fermentation
Yogurt
Cheese
Sauerkraut

14. Good EOC Question What process? What kind of fermentation?
Aerobic or anaerobic?
What are the products?

15. ANAEROBIC CONDITIONS:
Aerobic vs. Anaerobic
AEROBIC CONDITIONS:
(oxygen present)
Cell Respiration
36 ATP
ANAEROBIC CONDITIONS:
(no oxygen)
Fermentation
2 ATP
Which is more efficient (which produces MORE energy)?

16. 2. 3. 1.

17. Electron Transport Chain Animation