1. Cellular Respiration
Chapter 9

2. 2 Types of Respiration Aerobic- requires oxygen Anaerobic-
does not require oxygen (less efficient)

3. Aerobic Cellular Respiration
Process in which a glucose molecule is broken down and the energy it contains is released.

4. 3 Stages to Cellular Respiration
Glycolysis- glucose is partially broken down to pyruvate (yields 2 ATP) in cytoplasm
Krebs Cycle -pyruvate is completely broken down to CO2 and H2O (yields 2 ATP)

5. 3. Electron Transport System- occurs in the inner membranes of the mitochondria and produces 34 ATP

7. Therefore: 1 molecule of glucose yields 38 ATP
in Aerobic Cellular Respiration

8. Chemical Equation for Cellular Respiration
C6H12O6 + 6O2  6CO2 + 6 H2O +38 ATP

9. Anaerobic Respiration- Fermentation
Lactic Acid Fermentation-Muscle cells can use this for a short time to make ATP in the absence of necessary levels of oxygen. This is the reason muscles get sore after a workout.

10. Alcoholic Fermentation—yeast rely on this type of respiration
Wine and beer contain ethanol made during alcoholic fermentation by yeast

11. Both of these forms of anaerobic respiration only yield 2 ATP per molecule of glucose, so this type of respiration is very inefficient.