They do... read pages 15-17 of David's book.-He can. He has a copy. > > I understand David's wonder--even the simplest cell is quite complex from a mechanistic perspective. And which came first, the Ribosome or the RNA?-Or something else, and a ribozyme, RNA and Ribosome came later? It all has to start inorganic nad then somehow convert to organic. And there is a huge difference in the two chemistries, especially the need for enzymes.