Here's why:

* Organelles are membrane-bound structures within cells that perform specific functions. They are essential for the complex processes that occur in eukaryotic cells.

* Prokaryotic cells are simpler cells that lack a nucleus and other membrane-bound organelles. They have a single circular chromosome located in a region called the nucleoid, but it is not enclosed by a membrane.

* Examples of prokaryotes include bacteria and archaea.

While prokaryotes lack traditional organelles, they do have specialized structures like ribosomes, flagella, and pili that perform essential functions.