title: Evolution of anaerobic-energy-yielding metabolic pathways of the procaryotes.
mesh_terms: D000693:Anaerobiosis; D001419:Bacteria / Q000378:metabolism*; D005075:Biological Evolution; D002952:Citric Acid Cycle; D004579:Electron Transport; D004734:Energy Metabolism; D005285:Fermentation; D008660:Metabolism; D010788:Photosynthesis