1. Overview of Cellular Respiration
Link to Summas

2. Figure 9.6 An overview of cellular respiration (Layer 1)

3. Figure 9.6 An overview of cellular respiration (Layer 2)

4. Figure 9.6 An overview of cellular respiration (Layer 3)

5. CELLULAR RESPIRATION OVERALL REACTION:
C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O
Link to Overall Rxn Animation
Link to Glycolysis Animation

6. GLYCOLYSIS
Simplest ATP production pathway, present in essentially all cells
Most likely evolved very early in cell development
Has 2 main phases: ENERGY INVESTMENT AND ENERGY PAYOFF

7. Figure 9.8 The energy input and output of glycolysis

8. Figure 9.9 A closer look at glycolysis: energy investment phase (Layer 2)

9. Figure 9.9 A closer look at glycolysis: energy payoff phase (Layer 4)

10. Figure 9.7 Substrate-level phosphorylation

11. Ethanol or lactate Citric acid cycle
Fig. 9-19
Glucose
Glycolysis
CYTOSOL
Pyruvate
O2 present:
Aerobic cellular
respiration
No O2 present:
Fermentation
MITOCHONDRION
Ethanol or
lactate
Acetyl CoA
Citric
acid
cycle

12. ANAEROBIC PATHWAYS
How does the cell regenerate NAD+ to continue glycolysis in the absence of O2?

13. Fig. 9-18 2 ADP + 2 Pi 2 ATP Glucose Glycolysis 2 Pyruvate 2 NAD+
2 NADH 2
CO2
+ 2 H+
2 Ethanol
2 Acetaldehyde
(a) Alcohol fermentation
2 ADP + 2 Pi
2 ATP
Glucose
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2 Pyruvate
2 Lactate
(b) Lactic acid fermentation

14. Link to alcohol anaerobic respiration
Link to lactic acid anaerobic respiration

15. (a) Alcohol fermentation
Fig. 9-18a
2 ADP + 2 P
2 ATP i
Glucose
Glycolysis
2 Pyruvate
2 NAD+
2 NADH 2
CO2
+ 2 H+
2 Acetaldehyde
2 Ethanol
(a) Alcohol fermentation

16. (b) Lactic acid fermentation
Fig. 9-18b
2 ADP + 2 P
2 ATP i
Glucose
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2 Pyruvate
2 Lactate
(b) Lactic acid fermentation