Here's a breakdown of what that means:

* Nucleus: This is the control center of the cell, containing the cell's DNA.

* Membrane-bound organelles: These are specialized structures within the cell that are enclosed by their own membranes. Examples include:

* Mitochondria: Powerhouses of the cell, responsible for energy production.

* Golgi apparatus: Processes and packages proteins for transport within the cell.

* Endoplasmic reticulum: A network of membranes involved in protein and lipid synthesis.

* Lysosomes: Contain enzymes for breaking down waste materials.

* Vacuoles: Storage compartments for water, nutrients, and waste products.

Eukaryotic cells are found in all multicellular organisms, such as plants, animals, fungi, and protists. They are much more complex than prokaryotic cells, which lack a nucleus and membrane-bound organelles.