It is thought that a metabolic waste product produced by a certain group of prokaryotic organisms made possible the evolution…

It is thought that a metabolic waste product produced by a certain group of prokaryotic organisms made possible the evolution of the eukaryotic cell. Name the metabolic waste product and the group of prokaryotic organisms that produce it. Name the metabolic reaction that leads to this waste product being produced. Discuss two ways that the build-up of this waste product helped pave the way for the evolution of higher organisms (plants and animals).