Prokaryotic Cells

Prokaryotes were the first cells to evolve and they remain very simple and small. Bacteria and Archaea still have some organelles, but none are surrounded by internal membranes. For example, bacteria have DNA, but it is not in a nucleus, it is just located in what is called the "nucleoid" region of the cell.

Prokaryotic Organelles

Prokaryotes still have many of the enzymes and molecules that eukaryotes have, but they are mostly free in the cytoplasm, not isolated inside of internal membranes.

Pili - external appendages that can connect to a surface and exchange genetic information
Capsule - sticky substance outside the cell wall
Cell wall - helps the cell keep its shape
Cell membrane - controls what goes in and out of the cell
Ribosomes - make proteins with instructions from DNA (1 circular chromosome or plasmids)
Plasmids - not technically organelles, but small circular pieces of DNA that hold extra genes can be exchanged