# IV. Comparison of Anaerobic and Aerobic Respiration

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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

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

*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?

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

*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”?

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