Chapter 6 - Chapter 6 To study cells, biologists use...

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Chapter 6 To study cells, biologists use microscopes and the tools of biochemistry - light microscopes use visible light that passes through the specimen and then through the glass lenses which refract, or bend, the image to appear bigger. - electron microscope uses a beam of electrons to pass through and magnify the specimen - scanning electron microscope uses electron beams to get a very detailed picture of the specimen’s topography and is almost 3-D - transmission electron microscope uses an electron beam to pass through a specific part of the cell in which metals were used to “stain” the structures to get a look at the internal cell structure. - cell fractionation is the use of centrifuging to separate organelles of cells. The faster the rate of centrifugation, the smaller the organelles you can separate out to study Eukaryotic cells have internal membranes tat compartmentalize their functions. -Only domains Bacteria and Archaea have prokaryotic cells - ribosomes make proteins according to DNA. They are found on rough ER, in cytoplasm or
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This note was uploaded on 01/25/2011 for the course MGT 3102 taught by Professor Grace during the Spring '10 term at Georgia Institute of Technology.

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Chapter 6 - Chapter 6 To study cells, biologists use...

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