The toad shown above is a eukaryote. Simply put, eukaryotes are organisms that contain a nucleus and membrane bound organelles. Unlike prokaryotes, eukaryotes can be either unicellular (such as the protozoa) or multicellular (such as plants or animals). The genetic material in a eukaryote is found in it’s nucleus, or nuclear envelope, while in a prokaryote it is found in the nucleoid region. Organelles such as the mitochondria or Golgi-apparatus set apart the eukaryotes (which contain them) from the prokaryotes (which do not contain them).