BIO311C_F08_Chapter 6 part 1

BIO311C_F08_Chapter 6 part 1 - Eukaryotic cells Chapter 6...

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Eukaryotic cells Chapter 6
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Nucleus Proteins attached to DNA Presence of organelles Endomembrane system Multiply Cell size
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How did eukaryotes get membrane bound organelles?
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Endosymbiotic theory
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The Scale of Life
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Measurements 1 centimeter (cm) = 10 - 2 m 1 millimeter (mm) = 10 –3 m 1 micrometer (µm) = 10 –6 m 1 nanometer (nm) = 10 –9 m 1 Angstrom (A) = 10 -10 m
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Light microscopes first used and perfected in 1600s Phase contrast developed -1940s Electron microscopes developed since 1950s Confocal microscope developed since 1980s Microscopes provide windows to the cell
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Magnification Ratio of an object’s image to its real size Resolution Measure of clarity of image Contrast Visible differences in part of the sample
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Light Microscopes Magnification approx 1000 x Resolution 200 nm Electron Microscopes Magnification approx 250, 000 x Resolution 2 nm
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visible against a bright background. Brightfield Illumination
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This note was uploaded on 09/13/2009 for the course BIO 159593 taught by Professor Latham during the Winter '08 term at University of Texas.

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BIO311C_F08_Chapter 6 part 1 - Eukaryotic cells Chapter 6...

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