Non-enzymic origin of the metabolism.
D005075:Biological Evolution; D002244:Carbon / Q000378:metabolism; D002384:Catalysis; D003653:Decarboxylation; D004734:Energy Metabolism; D004798:Enzymes; D008660:Metabolism; D010084:Oxidation-Reduction; D010785:Photophosphorylation; D010788:Photosynthesis; D014867:Water
D004798:Enzymes; D014867:Water; D002244:Carbon