1. IV. Comparison of Anaerobic and Aerobic Respiration
AIM: How are anaerobic and aerobic respiration similar and different?
DO NOW: Answer the 5 questions on today’s handout
HOMEWORK: Re-do Cellular Respiration in the Wolf book. Pages 23-24; questions 9-22

2. 1. Anaerobic Respiration
A. Numbers of ATP
1. Anaerobic Respiration
a. Anaerobic respiration starts with _________ ATP, ends with _________ ATP, and has a net of _________ ATP. 2 4 2
2. aerobic Respiration
a. The product of aerobic respiration has _________ ATP. 34

3. *Q: Which phase do you think is more efficient? Why?
i. Don’t forget! This phase come after anaerobic respiration! That means that we must add the product ( _______ ATP ) from the first phase! 4
4 ATP ATP = ______ ATP
(anaerobic product) (aerobic product) (final product) 38
*Q: How many ATP are we left with at the end of the anaerobic phase? How about the aerobic phase?
*Q: Which phase do you think is more efficient? Why?

4. 38 ATP - 2 ATP = ___________ ATP
3. Adding it all up
a. Remember net value? We must ________________ the value we used to start the reaction from the final product! This starting value was _____ ATP.
subtract 2
38 ATP ATP = ___________ ATP
(total product) (energy used (net ATP)
to initiate reaction) 34

5. *Q: NOW why do you think ATP is called “the currency of the cell”?
b. Let’s review!
i. 2 ATP = _____________________________________
Energy used to initiate reaction
ii. 4 ATP = _____________________________________
Total (gross) of the first (anaerobic) phase
iii. 2 ATP = ____________________________________
Net ATP from the first (anaerobic) phase
iv. 34 ATP = ____________________________________
Total (gross) of the second (aerobic) phase
v. 38 ATP = ____________________________________
Total (gross) ATP from both phases
vi. 36 ATP = ___________________________________
Net ATP from both phases
*Q: NOW why do you think ATP is called
“the currency of the cell”?

6. ANAEROBIC RESPIRATION
B. Comparing the Processes
CHARACTERISTIC
ANAEROBIC RESPIRATION
AEROBIC RESPIRATION
Efficiency
Net ATP
Gross ATP
Final Products
Area Where It Occurs
less efficient
more efficient
2 ATP
36 ATP
4 ATP
38 ATP
Alcohol + CO2 + 4 ATP
or Lactic acid + 4 ATP
H2O + CO ATP
cytoplasm
mitochondria

7. 1. It’s about gases! C. Final Information About Cellular Respiration
a. The main product is ATP. Cells do this process to make energy for the body.
b. HOWEVER, the main purpose of cellular respiration is to exchange gases in the cell!
c. Don’t forget – in alcohol fermentation, you are releasing ____________ and in aerobic respiration you are taking in ______________ and letting out ________________ gases!
CO2 O2
CO2

8. How are anaerobic and aerobic respiration similar and different?
SUMMARY
How are anaerobic and aerobic respiration similar and different?
A person will breathe deeply and rapidly for some time after a period of very strenuous exercise. The longer and more intense the exercise was, the longer the deep breathing will continue after the exercise stops. Using your understanding of cellular respiration, explain why strenuous exercise stimulates deep breathing that continues after the end of exercise.
If a person moved from San Diego, CA to Estes Park, CO (elevation 7500 ft.), what would be the effect on cellular respiration for this person?
What effect might smoking cigarettes have on cellular respiration?
During strenuous exercise, muscle cells switch from aerobic respiration to lactic acid fermentation. The lactic acid is converted back into pyruvic acid when oxygen becomes available. Deeper breathing speeds this conversion. The longer the exercise lasts, the more lactic acid accumulates and the longer it takes for all of the lactic acid to be converted.