1. Cellular Respiration Song

3. 1) Glycolysis Recap

4. 2) Krebs Cycle Recap

5. 3) ETC Recap

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

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

8. CO2 + H2O

9. 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!)

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. Other fuels for Respiration
Other fuels for respiration besides glucose: glycogen, starch, proteins, fats

13. 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

14. 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

15. Talk to a Partner

16. Cornell Summary & Video