1. CELLULAR RESPIRATION Chapter 7

2. Cellular (Aerobic) Respiration
C6H O2  CO2 +H2O + ATP
The creation of ATP from glucose happens:
in four steps:
Glycolysis
Pyruvate oxidation
3. Krebs cycle
4. Oxidative phosphorylation/Chemiosmosis

3. GLYCOLYSIS
Glucose + 2 ATP + 2 NAD  2 Pyruvic acid + 4 ATP + 2 NADH

4. GLYCOLYSIS Glucose + 2 ATP + 2 NAD  2 Pyruvic acid + 4 ATP + 2 NADH
Input
Output
Output

5. Glycolysis Important things to remember:
Glycolysis occurs in the cytoplasm.
2 ATPs were produced.
(2 were input at the start so a total of 2 were produced
for future use).
2 pyruvic acids were formed.
2 NADH (for future ATP creation) were formed.

6. The Mitochondria

7. Pyruvate Oxidation Depends on oxygen availability.
When oxygen is present, pyruvic acid enters the mitochondria.
Each pyruvic acid (3 carbon molecule) are converted to Acetyl CoA (2 carbon molecule).
Carbon dioxide is released as a waste product.
2 Pyruvic Acid + 2 Coenzyme A + 2 NAD  2 Acetyl CoA + 2 CO2 + 2 NADH

8. Krebs Cycle

9. Krebs Cycle

10. Electron Transport Chain Review
Explosive release of energy as
heat that cannot be harnessed
for cellular work
H2O

11. C H E M I O S

12. Energy Yield of Respiration

13. Anaerobic respiration
Use of inorganic molecules (other than O2) as final electron acceptor.

14. Fermentation
Ethanol fermentation
Lactic acid fermentation