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

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Presentation transcript:

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

Eukaryotic (complex) vs. Prokaryotic (simple) Cells SEM 2,000 

How Life is Organized Eukaryotic Cell Plan

How Life is Organized Prokaryotic Cell Plan Eukaryotic Cell Plan

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

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

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

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

Animal Cell

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

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

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