A eukaryote (or ) is an organism whose cells contain complex structures enclosed within membranes. The defining membrane-bound structure that sets eukaryotic cells apart from prokaryotic cells is the nucleus, or nuclear envelope, within which the genetic material is carried. The presence of a nucleus gives eukaryotes their name, which comes from the Greek (eu, "good", "noble" & "true") and (karyon, "nut" & "kernel"). Most eukaryotic cells also contain other membrane-bound organelles such as mit… (More on Eukaryotes)