1. Chapter 9 Cellular Respiration

2. Transport of e- Hydrogen taken from glucose Dehydrogenase removes 2 H
2 e-, 1 p+  NAD+

3. Cellular Respiration Overview

4. Glycolysis Glucose is converted to 2 trioses Two steps E investment
1-5: Cost 2 ATP
E payoff
6-10
+ 4ATP
+ 2 NADH

5. The Investment

6. The Payoff

7. Kreb’s Cycle Pyruvate  acetyl-CoA 1 acetate creates: 3 NADH FAD
ATP (substrate-level)

8. Kreb’s Cycle

9. Electron Transport Chain

10. Chemiosmosis

11. Review

12. Fermentation Lactic Acid Alcoholic Muscles w/o O2 Soreness and Fatigue
Occurs early
Alcoholic
CO2 released from pyruvate making acetaldehyde
Acetaldehyde reduced to Ethanol

13. Glycolysis Facultative anaerobes Evolutionary significance
O2 present  Cellular Respiration
O2 not present  Fermentation
Evolutionary significance
Earliest form of survival
Most widespread

14. Fuel Sources

15. Feedback Inhibitors