Prokaryotic cells are simpler than eukaryotic cells and lack many of the organelles found in eukaryotes. Here are some key organelles found only in prokaryotes:

* No Nucleus: Prokaryotes lack a true nucleus. Their DNA is located in a region called the nucleoid, which is not enclosed by a membrane.

* No Membrane-Bound Organelles: Prokaryotes lack other membrane-bound organelles like mitochondria, Golgi apparatus, endoplasmic reticulum, lysosomes, etc.

* Ribosomes: Prokaryotes have ribosomes, but they are smaller than eukaryotic ribosomes (70S vs. 80S).

* Cell Wall: Most prokaryotes have a rigid cell wall outside their cell membrane. The composition of the cell wall varies depending on the type of bacteria.

* Capsule: Some prokaryotes have a protective layer called a capsule outside the cell wall.

* Pili and Flagella: These structures aid in movement and attachment.

Important Note: While prokaryotes lack many organelles found in eukaryotes, they have highly specialized structures and mechanisms to carry out all essential life processes.