CELL BIOLOGY A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site prokaryotic cell Generalized prokaryotic cell. Image: Sinauer Associates, Inc A cell lacking a membrane-bounded nucleus or membrane-bounded organelles. Prokaryotic cells are thus more primitive than eukaryotic cells, which evolved from them. A prokaryotic organism, such as a bacterium, consists of single prokaryotic cell. A general prokaryotic cell can be considered to have three architectural regions, though not all the components are always present: a cell envelope consisting of a capsule, a cell wall, and a cell membrane a cytoplasmic region that contains the cell genome (DNA), ribosomes, and various sorts of inclusions appendages, sometimes present, called flagella and pili In a prokaryotic cell, most of the functions of organelles, such as mitochondria, chloroplasts, and the Golgi apparatus, are taken over by the prokaryotic cell membrane. Related category    • CELL BIOLOGY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP