C. Estrella

Biology 4

Chapter 9 Learning Objective

Cellular Respiration

 

1.    Understand the energy flow through the biosphere.

2.    Describe the overall summary equation fro cellular respiration.

3.    Distinguish between subrate-level phophorylation and oxidative phosphorylation.

4.    Explain how exergonic oxidation of glucose is coupled t endergonic synthesis of ATP.

5.    Define oxidation and reduction.

6.    Explain how redox reactions are involved in energy exchanges.

7.    Describe the role of ATP in coupled reactions.

8.    Describe how the carbon skeleton of glucose changes as it proceeds through glycolysis.

9.    Define coenzyme (electron carriers) and understand the ones used in respiration (NAD+, FAD+).

10. Describe how coenzymes function in redox reactions.

11. Identify where in glycolysis that sugar oxidation, substrate-level phosphorylation and reductio of coenzymes occur.

12. Write a summary equation for glycolysis and describe where it occurs in the cell.

13. Describe where pyruvate is oxidized to acetyl CoA, what molecules are produced and how it links glycolysis to the Krebs cycle.

14. Explain at what point during cellular respiration glucose is completely oxidized.

15. Explain how the exergonic “slide” of electrons down the electron transport chain is coupled to the endergonic production of ATP by chemiosmosis.

16. Describe the process of chemiosmosis.

17. Explain how membrane structure is related to membrane function in chemiosmosis.

18. Summarize the net ATP yield from the oxidation of a glucose molecule by constructing an ATP ledger which includes coenzyme production during the different stages of glycolysis and cellular respiration.

19. Describe the fate of pyruvate in the absence of oxygen.

20. Explain why fermentation is necessary.

  1. Distinguish between aerobic and anaerobic metabolism.