Name:_________________________________ Subject: Biology 1
Date: November 5, 2024
ACTIVITY 3
CELLULAR RESPIRATION
I.
Objectives
1. Differentiate aerobic from anaerobic respiration
2. Explain the major features and sequence the chemical events of cellular respiration
3. Distinguish major features of glycolysis, Krebs cycle, electron transport system, and
chemiosmosis
II.
Methodology
Aerobic vs. Anaerobic Respiration
A. In a tabular form, list at least five major differences between aerobic and anaerobic
respiration
Aerobic Respiration
Anaerobic Respiration
1
2
3
4
5
Major Features and Chemical Events of Cellular Respiration
A. Make a diagram showing the total energy produced from the complete breakdown of glucose
by aerobic respiration
B. Illustrate the chemical events in cellular respiration
a. Glycolysis
b. Krebs Cycle/Citric Acid Cycle
c. Electron Transport System
C. Make a summary of cellular respiration by completing the table below
STAGE
1. Glycolysis (in cytosol)
2. Formation of Acetyl
CoA in mitochondria
SUMMARY
STARTING MATERIALS
END PRODUCTS
3. Citric Acid Cycle in
mitochondria
4. Electron transport
and Chemiosmosis (in
mitochondria)
III.
Study Guide Questions
1. What is the chemical equation that describes cellular respiration?
2. What are the “reactants” in the chemical equation from question 1? What are the
products?
3. Where does cellular respiration take place? Be sure you know where each
individual stage occurs!
4. Name and describe the purpose of the 2 electron carriers that participate in
cellular respiration.
5. Be able to do “energy accounting” for each stage of cellular respiration. Account
for all electron carriers and ATP molecules produced.
6. Compare and contrast the 3 stages of cellular respiration.
7. Clearly explain the importance of OXYGEN in cellular respiration.
8. Where does the water come from that is produced in cellular respiration?
9. Where does the carbon dioxide come from that is produced during cellular
respiration?
10. Where does the sugar come from that is used during cellular respiration?
11. Where does the oxygen come from that is used during cellular respiration?
12. Exactly how is ATP made in the electron transport chain?
13. What role do hydrogen ions play in the process of energy production?
IV.
References
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