chapter 4 Cell Structure powerpoint

chapter 4 Cell Structure powerpoint - Cell Structure...

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1 Cell Structure Chapter 4
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2 Outline Cell Theory Cell Size Prokaryotic Cells Eukaryotic Cells Organelles Containing DNA Endosymbiosis Plant Cells Animal Cells
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3 Cell Characteristics Genetic material single circular molecule in prokaryotes double helix located in nucleus in eukaryotes Cytoplasm fills cell interior Plasma membrane encloses the cell
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4 Generalized Eukaryotic Cell
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5 Cell Theory All organisms are composed of one or more cells. Cells are the smallest living units of all living organisms. Cells arise only by division of a previously existing cell.
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6 Cell Size Most cells are relatively small because as size increases, volume increases much more rapidly. longer diffusion time
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7 Visualizing Cells Resolution - minimum distance two points can be apart and still be distinguished as two separate points Compound microscopes - magnify in stages using multiple lenses Transmission electron microscope - electrons transmitted through specimen Scanning electron microscope - electrons beamed onto surface of the specimen
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8 Visualizing Cells
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chapter 4 Cell Structure powerpoint - Cell Structure...

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