They have genetic materials but are not enclosed within a membrane. These include bacteria and cyanophytes. The genetic material is a single circular DNA and is contained in the cytoplasm, since there is no nucleus. They do not engulf solids nor do they have centrioles or asters. There are pictures of 2 prokaryotes below.
Prokaryotes have a cell wall made up of peptidoglycan.
These are cells with a nucleus, this is where the genetic material is surrounded by a membrane much like the cells membrane. They have both a cellular membrane and a nuclear membrane, also the genetic material forms multiple chromosomes, that is linear and complexed with proteins that help it 'pack' and is involved in regulation. Eukaryotes are composed of both plant and animal cells. Plants vary from animal cells in that they have large vacuoles, cell wall, chloroplasts, and a lack of lysosomes, centrioles, pseudopods, and flagella or cilia. Animal cells do not have the chloroplasts, and may or may not have cilia, pseudopods or flagella, depending on the type of cell.