Division of Cells Prokaryotic Cells  Include Bacteria  Have NO NUCLEUS  LACK membrane-bound organelles  Smaller and much simpler than Eukaryotic cells.

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Presentation transcript:

Division of Cells Prokaryotic Cells  Include Bacteria  Have NO NUCLEUS  LACK membrane-bound organelles  Smaller and much simpler than Eukaryotic cells

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

Interior Ribosomes  Site of protein synthesis  Located throughout the cytoplasm

External Layers Cell Membrane  Regulates the entrance and exit of various substances in and out of the cytoplasm Cell Wall  Provides shape, structure, and support for the cell Glycocalyx  The outermost layer of bacterial cells; gel-like layer  Allows for the cell to stick to various surfaces

External Structures Flagella  Allows for cell movement  Long, protein filament that propels the cell forward Fimbriae  Hair-like bristles located on the external surface of the cell  Allow cells to stick to surfaces Conjugation Pili  Tube-like structures that allow for bacteria to pass DNA from cell to cell

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