Division of Cells

1. 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”

2. Structure of Prokaryotes • Three basic shapes • Bacilli: ______-shaped bacteria • ________: Spherical-shaped bacteria • Spirilla: __________-shaped bacteria; flexible

3. 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

4. Interior • ______________ • Made of two subunits (each containing a combination of various proteins and rRNA) which work together to synthesize protein • Located throughout the___________

5. 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

6. 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 ____