title: Origin of enzymic and photosynthetic activity in a prebiotic system.
mesh_terms: D002244:Carbon / Q000032:analysis; D006859:Hydrogen / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000032:analysis; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D009584:Nitrogen / Q000032:analysis; D010544:Peroxidases / Q000032:analysis*; D010788:Photosynthesis; D000644:Quaternary Ammonium Compounds / Q000528:radiation effects; D013455:Sulfur / Q000032:analysis; D013861:Thiocyanates / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D000644:Quaternary Ammonium Compounds; D013861:Thiocyanates; D013455:Sulfur; D002244:Carbon; D006859:Hydrogen; D007501:Iron; D010544:Peroxidases; D009584:Nitrogen