Cell Bio Unit I

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Author:
nicoled23
ID:
195885
Filename:
Cell Bio Unit I
Updated:
2013-01-28 01:15:16
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cell biology
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Description:
Cards for Unit I (for Exam I)
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  1. Cytology

    Biochemistry

    Genetics
    • *cellular structure, nearly 3 centuries ago, required light microscope
    • *cell structure AND function (and chemistry)
    • *19th c. Mendel, hereditary factors
  2. Cytology Distance Units

    10-3 meter
    • one millimeter
    • .001
  3. Cytology Distance Units

    10-6 meter
    • one millionth of a meter; micron; micrometer
    • .000006
  4. Cytology Distance Units

    10-9 meter
    • one nanometer
    • .000000001
  5. Cytology Distance Units

    10-10 meter
    • one Angstrom
    • .0000000001
  6. Complexes of proteins are about:
    A. 20nm
    B. 1 nm
    C. 5 nm
    D. 20 microns
    E. one micron
    A. 20nm
    (this multiple choice question has been scrambled)
  7. T F: The P face has fewer membrane proteins than the E face.
    False!!
  8. T F: Decreasing the number of double bonds in phospholipids will make the membrane more fluid.
    False!!
  9. T F: Increasing the length of the fatty acid tail will make membranes more fluid.
    False!!
  10. T F  Microtubules are mostly around the nucleus of the cell.
    TRUE!
  11. Microfilaments are typically located...
    around the outer edge of the cell. They can also extend from one cell to another.
  12. Immunoflourescence!!
    • *used to see small cell structures that are too small for light micro
    • *antibody binds to cell structure, then the fluor attaches to antibody
    • *shine UV light, and antibody/fluor shines!
  13. T F : For immunofluoresence, you shine visible light and UV light reflects back.
    FALSE!  Shine UV light, and visible light is given off
  14. the unaided eye has a resolving power of...
    200 microns!
  15. light microscopes can see objects _________ than 200-350nm
    greater
  16. electron microscopes can see about ____-____ nm
    0.1-0.2 (about the size of an atom)
  17. TEM
    Transmission electron microscopy, 2d images, pure black and white, no shadows- good for inside of cell
  18. SEM
    Scanning electron microscopy, 3d images, good for outside features of cell
  19. If an E Face and P face were pulled apart, which side would have the most proteins stuck to it?
    P face! This is due to anchorage... 

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