2. 1) Glycolysis Recap

3. 2) Krebs Cycle Recap

4. 3) ETC Recap

5. What happens if cells do not receive enough oxygen?
Fermentation
(aka: Anaerobic Respiration)

6. CO2 + H2O

7. 2 steps for Anaerobic Respiration
1. Glycolysis
- same as aerobic respiration
2. Fermentation (2 types)
- allows the production of a small amount of ATP without oxygen

8. 1) Lactic Acid Fermentation
Occurs in muscle cells of animals (& humans)
When you exercise and can’t take in oxygen as fast as your muscles need, then your muscle cells produce lactic acid (makes your muscles sore!)

9. Exercise & training Strenuous exercise both aerobic & anaerobic
Lifting heavy weights – 100% anaerobic
Marathon = 99% aerobic
Soccer or basketball game = 80% aerobic
Improve ATP production through training
Anaerobic sprints increase glycogen in muscles & more tolerant to lactic acid
Aerobic long runs increase size & # of mitochondria in muscles and improve heart & lungs delivery of oxygen

10. 2) Alcohol Fermentation
Yeast and some bacteria produce alcohol & CO2 when they perform fermentation.
We humans use both types of fermentation to make foods (like bread, cheese, sour cream, pickles, yogurt) and alcoholic beverages.

11. Total # ATP from 1 molecule of glucose during anaerobic respiration?
2 ATP Produced
Compare to 34 ATP produced during aerobic respiration

12. Comparison of 2 types of Respiration
Aerobic
Requires oxygen
Includes Glycolysis, Kreb’s cycle, & ETC
Produces 36 ATP per glucose
Anaerobic
No oxygen
AKA fermentation - 2 types (Lactic Acid & Alcohol)
Includes Glycolysis
Produces 2 ATP per glucose

13. Talk to a Partner

14. Cornell Summary & Video