A&P

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Author:
jamgirl
ID:
235497
Filename:
A&P
Updated:
2013-09-17 22:44:39
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Anatomy Physiology
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Description:
Cells, organelles etc
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  1. The basic structural and functional unit of the human body is
    the cell.
  2. The watery medium that surrounds a cell is called
    extracellular fluid.
  3. Functions of the cell membrane include all of the following, except

    separation of the cytoplasm from the extracellular fluid.
    regulation of exchange of materials with the extracellular environment.
    sensitivity to changes in the concentration of certain substances in the extracellular fluid. identifying foreign substances and cells. structural support.
    identifying foreign substances and cells.
  4. Which of the following is not a function of membrane proteins?

    acts as cellular receptors regulates
    the passage of ions
    acts as carrier molecules for various solutes acts as anchors or stabilizers for the cell membrane
    produces energy
    produces energy
  5. Each of the following is an example of a nonmembranous organelle, except

    lysosomes.
    cilia.
    centrioles.
    ribosomes.
    cytoskeleton.
    lysosomes.
  6. In the mitochondrion, folds are to cristae as the contained fluid is to
    matrix.
  7. Synthesis of lipids takes place at the
    smooth endoplasmic reticulum.
  8. contain enzymes that break down hydrogen peroxide and absorb and break
    down fatty acids, generating hydrogen peroxide in the process
    Peroxisomes
  9. Chromosomes consist of ________ and ________.
    DNA; proteins
  10. Inside the cell, membrane proteins are bound to the

    cytoplasm.
    cytoskeleton.
    protein fibers.
    phospholipid bilayer.
    cell membrane.
    cytoskeleton.
  11. Microtubules have the following functions?

    They form structural components of organelles.
    They regulate the exchange of waste products with ECF.
    They provide a mechanism for changing the cell shape.
    all of these both
    They form structural components of organelles and They provide a mechanism for changing the cell shape
    They form structural components of organelles and They provide a mechanism for changing the cell shape
  12. Microfilaments
    anchor the cytoskeleton to integral proteins of the cell membrane.
  13. If an animal cell lacked centrioles, it would not be able to
    divide.
  14. Analysis of a tissue sample indicates that it contains abundant
    filaments composed of the protein myosin and many actin microfilaments.
    This tissue is probably
    muscle tissue
  15. Examination of a sample of glandular cells reveals an extensive network
    of smooth endoplasmic reticulum. Which of the following would be a
    possible product of these cells?

    digestive enzymes
    steroid hormones
    protein hormones
    transport proteins
    antibodies
    steroid hormones

  16. Which structure forms the spindle apparatus during cell division?

    1 2 3 5 6
    2





  17. Synthesis of carbohydrates and lipids occurs in the structure labeled?
    4. 5. 6. 7. 8
    7



  18. Which structure produces ATP for the cell?
    3



  19. Which organelle renews the cell membrane and modifies and packages proteins for secretion?
    8



  20. The structure labeled "1" permits the cell to
    Move materials across the cell surface

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