<prompt> Prokaryotes have all, exceptRigid cell wallFlagellaRibosomesWell defined Nuclear membrane  <response>: Prokaryotic cells have Cell wall, Cell membrane, ribosome, Nucleoid. BUT Nuclear membrane, nucleolus, endoplasmic reticulum, mitochondria are absent Ref: Ananthanarayana textbook of Microbiology 9th edition Pgno : 9 