1. Cellular Respiration

2. What is respiration?
What do you notice about this equation?

3. How is the energy stored?

4. Where does it happen?
Starts in cytoplasm
Finishes in the mitochondria

5. Step One: Glycolysis Where?
Glucose is split in half, making two pyruvates.
Energy from the broken bond makes

6. Step Two: Kreb’s Cycle Where? Acetyl CoA is made using oxygen.
What else is made?
Broken bonds make
The Acetyl CoA is broken down, creating stored energy for step three.

7. Step Three: Electron Transport Chain
Stored energy from the Kreb’s Cycle is used to make
The leftover hydrogen combines with oxygen to make water.

8. Summary Glycolysis Kreb’s Cycle Electron Transport Chain
Where?
What was made?
What is necessary to go to the next step?
Kreb’s Cycle
Electron Transport Chain
Total ATP from one glucose?

9. What if there is no oxygen?
Fermentation happens after glycolysis.
In yeast and bacteria, pyruvate is turned into alcohol.
In animals, pyruvate is turned into lactic acid.
No more ATP is made!
This is called anaerobic respiration.