1. Cell: Smallest Unit of Life Cancer Cells 1,000 

2. Eukaryotic (complex) vs. Prokaryotic (simple) Cells SEM 2,000  http://www.cellsalive.com/howbig.htmwww.cellsalive.com/howbig.htm

3. How Life is Organized Eukaryotic Cell Plan

4. How Life is Organized Prokaryotic Cell Plan Eukaryotic Cell Plan

5. Prokaryotic cell Nucleoid region Nucleus Eukar yotic cell Organelles Colorized TEM 15,000  Comparison of Cell Types Note - Size, scale, internal organization of each

6. Scale of Life Cells are limited in size because of surface area to volume ratio Too large a cell  too much volume and not enough exchange with environment Smaller cells  less volume so easier for cell membrane to meet metabolic demand of the cell

7. Prokaryotic Cell Structure Lacking well defined nuclei or organelles Variety of shapes and sizes

8. Variety of Shapes and Sizes Lyme’s Disease Botchulism Pneumonia Strep Throat

9. Animal Cell

10. Compartmentalization of Eukaryotic Cells Many small enclosed environments to create environments for unique chemical reactions. Note the continuous flow of membranous compartments Endomembrane system- internal system of membrane bound compartments

11. Plant Cell Note the differences in structure to animal cell. What are similarities?