Chapter 9 review packet answers

To help you study for the respiration test on Thursday, here are the answers to the chapter 9 review packet handed out in class on Tuesday.

Interactive questions

9.1 C₆H₁₂O₆, 6 CO₂, energy (ATP + heat)
9.2 a. oxidized b. oxidizing agent c. reduced
9.3 a. oxygen b. glucose c. Some is stored as ATP and some is released as heat
9.4 a. electron acceptor or oxidizing agent b. NADH
9.5 a. glycolysis: glucose --> pyruvate b. Krebs cycle c. ETC and oxidative phosphorylation d. substate-level phosphorylation e. substrate-level phosphorylation f. oxidative phosphorylation The top two arrows show electrons carried by NADH to the ETC
9.6 a. 2 ATP b. 2 glyceraldehyde phosphate (not important for this class) c. 2 NAD+ d. 2 NADH e. 4 ATP f. 2 pyruvte
9.7 a. pyruvate (from glycolysis) b. CO₂ c. NADH d. CoA e. acetyl CoA f. oxaloacetate g. citrate h. CO₂ i. NADH j. CO₂ k. NADH l. ATP m. FADH₂ n. NADH
9.8 a. intermembrane space b. inner mitochondrial membrane c. mitochondrial matrix d. ETC e. NADH + NAD+ f. NAD+ g. H+ h. 2 H+ + 1/2 O₂ i. H₂O j. ATP synthase k. ADP + P_i l. ATP
9.9 a. -2 b. 4 c. Krebs cycle d. 32 or 34 e. 38 f. 2 g. 6 h. 2 i. 2 j. 2
9.10 Respiration yields up to 19 times more ATP than does fermentation. By oxidizing pyruvate to CO₂ and passing electrons from NADH through the ETC, respiration can produce a maximum of 38 ATP compared to the 2 net ATP that are produced by fermentation.

Test Your Knowledge
1. a 15. c
2. a 16. c
3. c 17. b
4. d 18. d
5. e 19. c
6. d 20. e
7. c 21. c
8. e 22. b
9. b 23. d
10. b 24. e
11. a 25. a
12. e 26. e
13. c 27. c
14. e 28. d

I am not overly concerned with the Structure your Knowledge questions. You have a cellular respiration overview chart that we filled out the first day of respiration that has all the important information on it.