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12. During fat catabolism, a triglyceride is broken down into glycerol and three

ID: 60901 • Letter: 1

Question

12. During fat catabolism, a triglyceride is broken down into glycerol and three fatty acids. Glycerol is broken down from the last half of glycolysis through the Krebs cycle to release 4 NADH and 1 FADH2 molecules. How many total ATP can ultimately be made from these 5 energy carriers? a. 10 ATP b. 12 ATP c. 14 ATP d. 24 ATP e. 36 ATP 13. In noncyclic electron transport during the light reactions, a. oxygen gas is released. b. ATP is formed. c. water donates electrons and protons. d. NADPH +H forms. e. All of the above. 14. In the chloroplasts, light leads to the pumping of protons out of the thylakoids ATP forms when protons are pumped into the thylakoids light causes the thylakoids to become more acidic than the stroma. protons return passively to the thylakoids through protein channels. a. b. c. d. e. proton pumping requires ATFP 15. Which of the following is NOT common to BOTH aerobic respiration electron transport and noncyclic electron transport? a. Series of membrane-bound electron carriers b. Energy released from oxidation-reduction reactions Active transport of hydrogen cations across a membrane Use of ATP synthase enzyme All of the above occur during both aerobic electron transport and noncyclic Photophosphorylation c. d. e.

Explanation / Answer

12. (c) 14

13. (c) All of the above

14. (a) light leads to the pumping of protons out of the thylakoids

15. (e)

18. (e) All of the above

19. (d) Thylakoid membrane; stroma

20. (b) how much light is absorbed by the pigment across a range of wavelengths

21. (a) H2O18