Here's a breakdown:

* Eukaryotic cells are complex cells that have a membrane-bound nucleus, where their genetic material (DNA) is stored. Examples of organisms made up of eukaryotic cells include plants, animals, fungi, and protists.

* Prokaryotic cells are simpler cells that lack a nucleus and other membrane-bound organelles. Their DNA is located in a region called the nucleoid, but it is not enclosed within a membrane. Examples of organisms made up of prokaryotic cells include bacteria and archaea.