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plantenbiologie college 3 deel 1

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  • Waar precies vindt wortelademhaling plaats enhoe verhoudt zich dat tot deling/strekking
  • Pneumatoforen van Mangrove
  • Pneumatoforen van Mangrove
  • Transcript

    • 1.  
    • 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
    • 6. Biosynthesis of protein, costs depend on N-source:
      • Glucose + O 2  C x + CO 2 + NADH + ATP
      • NO 3 + 8 NADH  NH 4
    • 7. Biosynthesis of protein, costs depend on N-source:
      • Glucose + O 2  C x + CO 2 + NADH + ATP
      • NO 3 + 8 NADH  NH 4
      NH 4 + C x + 2 ATP + 6 NADH  AA AA n + AA + 4 ATP  AA n+1 AA = Amino Acid
    • 8. Biosynthesis of protein, costs depend on N-source:
      • Glucose + O 2  C x + CO 2 + NADH + ATP
      • NO 3 + 8 NADH  NH 4
      AA n + NO 3 + 14 NADH + 6 ATP  AA n+1 NH 4 + C x + 2 ATP + 6 NADH  AA AA n + AA + 4 ATP  AA n+1 AA = Amino Acid
    • 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
    • 16.  
    • 17.  
    • 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