Here are some examples of eukaryotes:

* Animals (including humans)

* Plants

* Fungi

* Protists (single-celled organisms like amoebas and algae)

The nucleus is a membrane-bound organelle that contains the cell's genetic material (DNA). This DNA is organized into chromosomes, which are responsible for carrying the instructions for building and maintaining the organism.

In contrast, prokaryotes (like bacteria and archaea) do not have a well-defined nucleus. Their DNA is located in a region called the nucleoid, but it is not enclosed within a membrane.