Prokaryotic<span> cells </span>do<span> not </span>have<span> a nucleus. ... Both</span>prokaryotic<span> and </span>eukaryotic<span> cells </span>have<span> structures in</span>common<span>. All cells </span>have<span> a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment</span>