Chapter 6 Vocab
Last Modified: 2011-07-01
Related Textbooks:Biology with MasteringBiology™ (with WebCT Access Code Card -- Generic) (8th Edition)
visible light is passed through the specimen and then through glass lenses; lenses bend the light to magnify the image
focuses a beam of electrons through the specimen or onto its surface; not limited by light wavelength; reveals CELL ULTRASTRUCTURE
detailed study of the surface of a specimen; scans the surface of the example coated with gold, excites electrons on the surface which are detected by device that translates the pattern to a video screen
electron beam though thin section of specimen which has been stained with atoms of heavy metals which attach to certain cell structures thus enhancing the electron density; uses electromagnets to bend electron paths into focus
takes cells apart and separates the major organelles and other sub cellular structures from one another; uses centrifuge which spins test tubes of cells at various speeds so that fraction of cell components settle in bottom forming a pellet
semifluid, jellylike substance enclosed by the membrane in which organelles and other components are found
region that is not membrane enclosed where DNA of prokaryotic cells is located
the interior of a prokaryotic cells and the region between the nucleus and the plasma membrane of eukaryotic cells
ribosomes on the outer surface of the membrane and thus appears rough
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