This makes it a critical part of prokaryotic cell function. Prokaryotes do not have mitochondria. Interestingly, one widely accepted theory of eukaryotic evolution, known as the endosymbiotic theory, ...

It's just the way things are. The difference between eukaryotic and prokaryotic cells has to do with the little stuff-doing ...

Eukaryotic cell DNA in a nucleus, plasmids are found in a few simple eukaryotic organisms. Prokaryotic cell DNA is a single molecule, found free in the cytoplasm; additional DNA is found on one or ...