Some psychiatrists and/or psychotherapists believe that the symptoms of conversion disorder may be symbolic resolutions of psychological conflicts. For example, in some cases vomiting may represent revulsion and disgust, or blindness may represent the inability to accept the witnessing of a traumatic event.
Some of the most important characteristics of prokaryotic cells are as follows: The prokaryotic (Gr., pro-primitive, karyon-nucleus) cells are the most primitive cells from morphological point of view. They occur in bacteria and blue green algae.
Features of the Prokaryotic Cell. Prokaryotic cells have the following features: 1  The genetic material (DNA) is localized to a region called the nucleoid which has no surrounding membrane. 2  The cell contains large numbers of ribosomes that are used for protein synthesis. Note that the cell wall of prokaryotes differs chemically from the eukaryotic cell wall of plant cells and of protists. 2  Some bacteria have flagella which are used for locomotion and/or pili, which may be used to pull two cells in close contact, and perhaps to facilitate the transfer of genetic material.