I. Symbioses between Microorganisms II. Plants as Microbial Habitats 2. The Legume–Root Nodule Symbiosis 3. Agrobacterium and Crown Gall Disease 4. Mycorrhizae III. Animals as Microbial Habitats 5. The Mammalian Gut 6. The Rumen and Ruminant Animals 7. The Human Microbiome 8. Termites
4.8 Energy Conservation 4.9 Glycolysis as an example of fermentation 糖酵解 4.10 Respiration and membrane associated electron carriers Aerobic respiration-oxygen as terminal electron acceptor有氧呼吸 Anaerobic respiration-other substances as acceptors无氧呼吸 4.11 ENERGY CONSERVATION FROM THE PROTON MOTIVE FORCE 4.12 Carbon Flow in Respiration: the citric acid cycle 三羧酸循环 4.13 Catabolic Alternatives分解代谢的多样性