Download Name Date Period Chapter 9: Cellular Respiration: Harvesting

Name
Date
Period
Chapter 9: Cellular Respiration: Harvesting Chemical Energy
1. Where do organic compounds store energy? How does a cell access this potential energy?
2. Compare fermentation and cellular respiration.
3. What is the summary equation for cellular respiration and what is the free energy change in this
process?
4. Summarize the principle of redox.
5. If glucose and other organic molecules are being oxidized during cellular respiration, what is
being reduced?
6. What is the roll of NAD+ and FAD2+ in cellular respiration (may have to jump ahead to find
portions of the answer)?
7. Why is cellular respiration considered exergonic?
8. List the four stages of cellular respiration (really three, but I’ll help you squeeze another one in
there):
a. ____________________________
b. Oxidation of Pyruvate to Acetyl CoA
c. ____________________________
d. ____________________________
9. Compare substrate‐level phosphorylation and oxidative phosphorylation.
10. Glycolysis starts with ____________ and produces _______________.
11. Stage 1: Glycolysis
a. Occurs in the
b. Starts with
c. Produces
d. Yields _______ ATP
12. Why is glycolysis thought to be one of the earliest biochemical processes to evolve?
13. Stage 1a: Oxidation of Ryruvate
a. Occurs in the
b. Starts with
c. Produces
d. Yields ______ATP
14. Stage 2: The Citric Acid Cycle
a. Occurs in the
b. Starts with
c. Produces
d. Yields _____ATP
e. Produces ATP through
15. What is the major function of the citric acid cycle?
16. Stage 3: Oxidative Phosphorylation
a. Occurs in the
b. Starts with
c. Produces
d. Yields ______ ATP
e. Produces ATP through
17. What is the final electron acceptor in the electron transport chain?
18. Describe the role of the electron transport chain. What happens to the electrons and the H+?
19. What is chemiosmosis and how is it generated?
20. Label the following:
21. What is the main reason energy is harvested in stages in respiration?
22. What happens to most of the energy released during respiration?
23. What is the yield of ATP in cellular respiration given as “about 36‐38?”
24. Identify examples of each of the following in cellular respiration:
a. Negative feedback
b. Positive feedback
25. Take a peak at the summary equation again:
a. Where did the glucose come from? Where did it go?
b. Where did the oxygen come from? Where did it go?
c. Where did the CO2 come from? Where did it go?
d. Where did the H2O come from?
e. Where did the ATP come from?
f.
What else is produced that is not listed in the equation?
26. Label the following:
27. What is the fate of fats and proteins when used as food molecules?
28. Fermentation:
a. Alcoholic fermentation converts glucose to
b. Alcoholic fermentation is utilized by what organisms?
c. Lactic acid fermentation converts glucose to
d. Lactic acid fermentation is utilized by what organisms?
29. Why do we eat?
30. Why do we breathe?