> > One refers to a multi-celled organism and one to a single-celled, no?
> >
> > La"I don't remember which is which, though -- Latin, don't fail me now!"Zorra
>
> Nope, Eukaryotes are organisms with a more modern type of cell than Prokaryotes. In Eukaryotes there is a nucleus where all the DNA is stored, but a Prokaryote lacks suck an organel and the DNA moves more freely through the cell. There's a couple more organels that eukaryotes have that prokaryotes lack.
>
> All multi-cellular organisms are eukaryotes, but a lot of single celled organisms are also eukaryotes. All bacteria are prokaryotes though.

To be even more pedantic, I did a little checking on this: it turns out there are a few prokaryotes which have multi-cellular forms at some stages of their life cycle. There is even one known prokaryote which is truly multi-cellular: the multi-celled magnetotactic prokaryote (MMP). Maybe organisms like these, or prokaryotes not yet discovered, were in fact able to evolve multi-cellular lines before the eukaryotic cell came about (somewhere between 1.5 - 3 billion years ago).