Bacteria

Bacteria are very small, unicellular organisms, so-called microorganisms. They are usually between 0.2 and 2.0 micrometers in size and multiply by simple transverse division. Bacterial cells do not have a solid cell nucleus. The DNA of the bacteria is therefore available at ″nackt″ in the cytoplasm of the cell. Because of this special property, bacteria are classified as prokaryotes. The word is derived from the Greek words pró (instead) and káryon (core) and therefore means as much as core replacement. In contrast, in plant, animal and human cells the DNA is protected in a cell nucleus. They are therefore counted among the Eukaryotes. The term derives from the Greek words eu~ (good, wohl) and káryon (core).

https://de.wikipedia.org/wiki/Bakterien _{(Wikipedia CC-by-sa-3.0)}