2. Energy: Respiration Campbell, chapter 9

3. CO 2 + energy  C 6 H 12 O 6 + O 2 Photosynthesis: C 6 H 12 O 6 + O 2  CO 2 + energy Respiration: 1. Heat 2. NADH 3. ATP

4. Heat of combustion: (kJoule g -1 ) depends on reduction status: 0.9 CH 2 O Glucose 0.0 CO 2 2.2 CH 2 O 0.1 Lipid 1.7 CH 3 O Methanol 2.9 CH 4 Methane

5. Heat of combustion: (kJoule g -1 ) depends on reduction status: 0.9 CH 2 O Glucose 0.0 CO 2 2.2 CH 2 O 0.1 Lipid 1.7 CH 3 O Methanol 2.9 CH 4 Methane 2.5 Kerosine 1.0 Xmas-tree 0.8 Maize

9. Root respiration:

10. Fig. 9-6-1 Substrate-level phosphorylation ATP Cytosol Glucose Pyruvate Glycolysis Electrons carried via NADH Glycolysis: Respiration, step 1: Glycolysis:

11. Fig. 9-6-2 Mitochondrion Substrate-level phosphorylation ATP Cytosol Glucose Pyruvate Glycolysis Electrons carried via NADH Substrate-level phosphorylation ATP Electrons carried via NADH and FADH 2 Citric acid cycle Citric acid cycle: Respiration, step 2:

12. Fig. 9-6-3 Mitochondrion Substrate-level phosphorylation ATP Cytosol Glucose Pyruvate Glycolysis Electrons carried via NADH Substrate-level phosphorylation ATP Electrons carried via NADH and FADH 2 Oxidative phosphorylation ATP Citric acid cycle Oxidative phosphorylation: electron transport and chemiosmosis Electron transport chain + phosphorylation Respiration, step 3:

13. Oxygen is required for oxydative phosphorylation:

14. Oxygen is required for oxydative phosphorylation:

15. If no oxygen is available: anaerobic fermentation

18. Alternative Oxidase Ontkoppelt elektronentransport en ATP-synthese. Energie gebruikt voor warmteproductie

19. Alternative Oxidase Ontkoppelt elektronentransport en ATP-synthese. Energie gebruikt voor warmteproductie Amorphophallus titanum

20. Alternative Oxidase Ontkoppelt elektronentransport en ATP-synthese. Energie gebruikt voor warmteproductie Lysichiton americanum Amorphophallus titanum

21. Conclusions Respiration: 1. Required for maintenance and growth 2. Depends on chemical composition 3. O 2 availability can be problematic