1. Chapter Twenty Three Biochemical Energy Production

2. Copyright © Houghton Mifflin Company. All rights reserved.23 | 2 →CO 23.1 The energy consumed by these scarlet ibises in flight is generated by numerous sequences of biochemical reactions. Lipids cont’d © Luiz Marigo / Peter Arnold, Inc.

3. Copyright © Houghton Mifflin Company. All rights reserved.23 | 3 ←Fig. 23.1 The processes of catabolism and anabolism are opposite in nature. Lipids cont’d

4. Copyright © Houghton Mifflin Company. All rights reserved.23 | 4 →Fig. 23.2 A schematic representation of a eukaryotic cell. Lipids cont’d

5. Copyright © Houghton Mifflin Company. All rights reserved.23 | 5 Fig. 23.3 (a) Representation of a mitochondria. (b) micrograph of a mitochondria crista. Lipids cont’d © R. Bhatnagar / Visuals Unlimited

6. Copyright © Houghton Mifflin Company. All rights reserved.23 | 6 →Fig. 23.4 Various phosphate forms of adenosine. Lipids cont’d

7. Copyright © Houghton Mifflin Company. All rights reserved.23 | 7 Fig. 23.5 (a) Flavin adenine nucleotide (b) nicotinamide adenine dinucleotide Lipids cont’d

8. Copyright © Houghton Mifflin Company. All rights reserved.23 | 8 Fig. 23.6 Structural formula for coenzyme Lipids cont’d

9. Copyright © Houghton Mifflin Company. All rights reserved.23 | 9 Fig. 23.7 Classification of metabolic intermediate compounds in terms of function. Lipids cont’d

10. Copyright © Houghton Mifflin Company. All rights reserved.23 | 10  Table 23.1 Lipids cont’d

11. Copyright © Houghton Mifflin Company. All rights reserved.23 | 11 →Fig. 23.8 Hans Adolf Krebs received the Nobel Prize in medicine. Lipids cont’d Hulton Archive / Getty Images

12. Copyright © Houghton Mifflin Company. All rights reserved.23 | 12 Lipids cont’d

13. Copyright © Houghton Mifflin Company. All rights reserved.23 | 13 ←Fig. 23.9 Citric Acid Cycle Lipids cont’d

14. Copyright © Houghton Mifflin Company. All rights reserved.23 | 14 Lipids cont’d

15. Copyright © Houghton Mifflin Company. All rights reserved.23 | 15 →Fig. 23.10 (a) The oxidized form and reduced form of the electron carrier flavin mononucleotide. (b) The oxidized form and reduced form of the electron carrier coenzyme Q. Lipids cont’d

16. Copyright © Houghton Mifflin Company. All rights reserved.23 | 16 ←Fig. 23.11 (a) CoQH2 carries electrons from both complexes I and II to complex II. (b) NADH is the substrate for the complex I and FADH2 is the substrate for complex II. Lipids cont’d

17. Copyright © Houghton Mifflin Company. All rights reserved.23 | 17 Fig. 23.12 Electron movement through Complex III is initiated by the electron carrier CoQH2. Lipids cont’d

18. Copyright © Houghton Mifflin Company. All rights reserved.23 | 18 ←Fig. 23.13 The electron-transfer pathway through Complex IV. Lipids cont’d

19. Copyright © Houghton Mifflin Company. All rights reserved.23 | 19 Lipids cont’d CAG 23. 3

20. Copyright © Houghton Mifflin Company. All rights reserved.23 | 20 →CC 23.1 Lipids cont’d

21. Copyright © Houghton Mifflin Company. All rights reserved.23 | 21 Fig. 23.14 Protein complexes I, III, and IV also act as proton pumps. Lipids cont’d

22. Copyright © Houghton Mifflin Company. All rights reserved.23 | 22 ←Fig. 23.15 Lipids cont’d

23. Copyright © Houghton Mifflin Company. All rights reserved.23 | 23 Lipids cont’d  CAG 23.4

24. Copyright © Houghton Mifflin Company. All rights reserved.23 | 24 Fig. 23.16 The interconversion of ATP and ADP is the principal medium for energy exchange in the biochemical processes. Lipids cont’d

25. Copyright © Houghton Mifflin Company. All rights reserved.23 | 25 ←CC 23.2 Hibernating bears rely on brown fat tissue to help meet their bodies’ heat requirements. Lipids cont’d © Lynn Rogers / Peter Arnold, Inc.

26. Copyright © Houghton Mifflin Company. All rights reserved.23 | 26 ←CC 23.3 Lipids cont’d