1. How is life as we know it powered?
Big Idea/Question….
This is not Bell Work….please get your notes out and get ready to “roll”
How is life as we know it powered? PS CR

2. Chapter 4 Cellular Respiration: Harvesting Chemical Energy

3. Learning Targets
14. Explain the interrelationship between the processes of photosynthesis and cellular respiration.
13. Compare and contrast the structure and function of mitochondria and chloroplasts.

4. PS vs CR
Photosynthesis
Cellular Respiration

5. Make a Venn Diagram to compare & contrast
PS vs CR
Make a Venn Diagram to compare & contrast
Cellular Respiration
Photosynthesis
Function?
Function?
Structure?
Structure?

6. PS vs CR Photosynthesis Inputs: Outputs: Cellular Respiration Inputs:
Make a table!!
Make a table!!
Photosynthesis
Plants & some bacteria
Inputs:
Light energy
H2O
CO2
Outputs: O2
C6H12O6
Cellular Respiration
Plants & animals
Inputs:
C6H12O6 O2
Outputs:
CO2
H2O
ATP

7. Harvesting Stored Energy
Organic compounds store energy between atoms in chemical bonds
Breaking bonds (catabolism) liberates energy
Cellular Respiration  more efficient process
Fermentation  partial harvest of energy

8. Cellular Respiration Glycolysis Bridging Process Krebs Cycle
Electron Transport Chain

9. Learning Targets 4. Explain the Role of NADH, FADH2, and NADPH
2. Identify the inputs and outputs and location of glycolysis, Krebs & Oxidative phosphorylation

10. Glycolysis Glycolysis  splitting glucose Location  cytoplasm
Anaerobic (no O2 required)
Utilized by ALL cells
Steps
Energy Investment
Energy Payoff
Per Glucose
Produces 2 ATP ( 5 % of available energy)
2 NADH
2 Pyruvate
Diagram!

13. Glycolysis Animation
hill.com/sites/ /student_view0/chapter25/animation__ho w_glycolysis_works.html

14. Bridging (Transition) Process
Aerobic  requires O2 as final electron acceptor (happens in ETC)
Location --inside mitochondria “One-Two Punch”
Carbonyl group released as CO2
NAD+ reduced to NADH
Leaves Acetyl--picked up by CoA & becomes Acetyl CoA
Acetyl CoA intermediate in all catabolism (esp. fats & proteins)
Surplus of ATP  acetyl-CoA gets stored as lipid
Little ATP  acetyl-CoA enters Krebs cycle & makes ATP