Division of Cells Prokaryotic Cells Include Bacteria Archaea

Division of Cells �Prokaryotic Cells Include Bacteria & Archaea Literally means “before nucleus” � So-have __________ membrane-bound _____ and much _____ than Eukaryotes Organisms made of prokaryotic cells are called “prokaryotes”

Structure of Prokaryotes �Three basic shapes 1. 2. 3. Bacilli: ______-shaped bacteria ____: Spherical-shaped bacteria Spirilla: _____-shaped bacteria; flexible

Prokaryotic Cell Parts: Interior Do prokaryotic cells have DNA if they lack a nucleus? � _____: a _______ within the cytoplasm of the cell in which the _____ is located; center of the cell (no membrane encloses the DNA) � _____ Semifluid, gel-like solution encased within the cell membrane of the cell

Interior �_______ Made of two subunits (each containing a combination of various proteins and r. RNA) which work together to synthesize protein Located throughout the______

External Layers �_______ Regulates the entrance and exit of various substances in and out of the cytoplasm �Cell Wall Provides ______, structure, and _____ for cell �_______ The _____ layer of bacterial cells; gel-like _____ layer

External Structures � Flagella Allows for cell _____ Long, _____ filament that _______ the cell forward � Fimbriae _____-like bristles located on the external surface of the cell Allow cells to ____ to surfaces � _____ Pili Tube-like structures that allow for bacteria to pass ______ from cell to ____