Here's why:

* DNA is the genetic material: It carries the instructions for building and maintaining an organism.

* All living organisms have DNA: This includes both prokaryotes (bacteria and archaea) and eukaryotes (plants, animals, fungi, etc.).

However, the DNA in prokaryotic cells is organized differently than in eukaryotic cells:

* No nucleus: Prokaryotes lack a membrane-bound nucleus. Instead, their DNA is located in a region called the nucleoid, which is not enclosed by a membrane.

* Circular DNA: Prokaryotic DNA is typically a single, circular molecule.

* Smaller genome: Prokaryotic cells have a smaller amount of DNA compared to eukaryotic cells.

Let me know if you have any more questions about prokaryotic cells!