AP Biology



AP Biology Name _________________________

Chapter 7 Baboon/Ch 6 Bat Cellular Respiration Guided Reading Assignment

Hint: review the recap points/questions at the end of each section – these are great quick quiz questions!

Define three catabolic pathways:

a. Glycolysis

b. Fermentation

c. Cellular respiration

1. Use the following terms correctly in a sentence: redox reactions, oxidation, reduction, reducing agent and oxidizing agent.

2. Why is being “reduced” equivalent to having a greater potential energy?

3. In cellular respiration, what is being oxidized and what is being reduced?

4. Describe the importance of NAD+ 2H and NADH + H+.

5. What are the three stages of aerobic cellular respiration? p. 140

6. What is substrate-level phosphorylation? p.144

7. Using the figure of Glycolysis to the right discuss the input of energy and the net output.

8. Using the picture below, describe how pyruvate is converted into acetyl CoA:

[pic]

9. Using the image below highlight (using two different colors) anywhere there is “energy” input and output. Draw a T chart below and list the molecules that are input and the molecules that are output.

[pic]

10. Discuss the overall function of the citric acid cycle/krebs cycle.

a. Where does the C “go” that is removed?

b. What is happening when NAD+ ⋄ NADH + H+?

c. Where is substrate level phosphorylation happening?

11. What is oxidative phosphorylation?

12. Why are electron transport chains (ETC) an advantage to living systems?

13. What are cytochromes?

14. Explain what is happening in the diagram below of the activities occurring on the ECT.

[pic]

15. Define chemiosmosis and label the diagram below. Also, discuss the main function of the proton-motive force. p. 151

[pic]

16. Complete the summary diagram of cellular respiration. You are responsible for these #’s and locations!

17. What is the purpose of fermentation below AND how is it different from aerobic reactions in terms of energy?

18. Does aerobic cellular respiration happen in prokaryotic organisms – if yes – where?

19. What is a facultative anaerobe?

20. What is the evolutionary significance of glycolysis?

21. Why do fats provide a little more than twice as many calories per gram as compared to carbohydrates or proteins? Hint: Think of the output of the Citric Acid Cycle.

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