Give examples of non-nuclear cells.

Nuclear-free cells can be found in both prokaryotes and eukaryotes. Prokaryotes are characterized by the absence of a nucleus in the cell. These are all representatives of the kingdom of bacteria and archaea. Eukaryotes have nuclei. But some eukaryotic cells do not have nuclei, or have lost them in the process of evolution. For example – human erythrocytes. The nuclei in erythrocytes are not needed, since they are not formed by division, and the saved space allows more oxygen to be transported. Also, the nuclei do not have conducting plant cells, since they are not needed there in principle.