Here's a breakdown of what that means:

* Organized nucleus: Eukaryotic cells have a distinct nucleus, a membrane-bound compartment that houses the cell's genetic material (DNA). This is in contrast to prokaryotic cells, which lack a true nucleus and have their DNA located in a region called the nucleoid.

* Internal membrane structure: Eukaryotic cells also have a complex system of internal membranes that divide the cell into compartments called organelles. These organelles carry out specific functions within the cell, such as energy production (mitochondria), protein synthesis (ribosomes), and waste removal (lysosomes).

Here are some examples of eukaryotic cells:

* Animal cells

* Plant cells

* Fungi cells

* Protist cells

Let me know if you have any other questions!