Subject - biology

The term prokaryote (also: prokaryotes, prokarya, prokaryota) encompasses all lifeforms with no true nucleus. Organisms with a true cell nucleus are called eukaryotes. The prokaryotes include bacteria, and archaea, which also have no nucleus but have some traits in common with the eukaryotes; they are thus placed between the pro- and eukaryotes from an evolutionary point of view.

Fig.1

Structure of a prokaryotic cell

Mariana Ruiz Villarreal (this work is public domain)

See also: eukaryotes