<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2014) (Learn how and when to remove this template message) </Td> </Tr> <P> Bacteria, despite their simplicity, contain a well - developed cell structure which is responsible for some of their unique biological structures and pathogenicity . Many structural features are unique to bacteria and are not found among archaea or eukaryotes . Because of the simplicity of bacteria relative to larger organisms and the ease with which they can be manipulated experimentally, the cell structure of bacteria has been well studied, revealing many biochemical principles that have been subsequently applied to other organisms . </P> <P> Perhaps the most elemental structural property of bacteria is their morphology (shape). Typical examples include: </P>

All the following are functions of the bacterial cell membrane except