Chapter 3-Cells

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jaceym1994
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44900
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Chapter 3-Cells
Updated:
2010-10-25 20:43:58
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Anatomy
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Anatomy and Physiology - Chapter 3
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  1. Tay-Sachs disease involves a cellular defect in _
    lysosomal enzymes
  2. Endoplasmic reticulum is best described as a _
    network of interconnected membranes.
  3. Differentiation seems to result from different _
    A. DNA info being turned on in different cells.
    B. cells possessing different kinds of DNA information.
    C. cells possessing different kinds of chromosomes.
    A
  4. Which of the following is a characteristic of aging cells?
    a. Golgi apparatus becomes fragmented.
    B. Lipid inclusions accumulate.
    c. Glycogen-containing structures decrease.
    D. All of the above.
    D
  5. Vesicles are formed by an action of the _
    cell membrane.
  6. Ribosomes are composed largely of protein and
    RNA
  7. The tendency for cancer cells to have abnormalities in cellular structures is called
    anaplasia.
  8. The decrease in skeletal muscle size following a prolonged period of inactivity is most closely assosicated with the activity of _
    lysososomes.
  9. Movement of molecules through a membrane by filtration depends upon the presence of _
    hydrostatic pressure.
  10. Mitochrondria function to:
    A. manufacture protein.
    B. release energy from glucose molecules.
    C. digiest lipid molecules
    B
  11. If a solution outside of a cell contains a greater concentration of dissolve particles than the contents of the cell, the solution is said to be_
    hypertonic.
  12. Chemotherapy usually makes use of drugs that affect the cancer cell's
    DNA molecules
  13. Because of mitosis and cytoplasmic division, the resulting cells contain
    A. identical chromosomes
    B. identical DNA info
    C. All of the Above
    C
  14. What cellular process requires the greatest expenditure of cellular energy?
    active transport
  15. A nucleolus is composed largely of _ and _.
    RNA, lipid
  16. If the concentration of glucose in the water outside of a cell is higher than the concentration inside,
    A. water will tend to enter the cell by osmosis
    B. water will tend to leave the cell by osmosis.
    C. glucose """
    B
  17. Which process involves the use of specific carrier molecules?
    Dialysis
  18. During the metapahse of mitosis, chromosomes
    A. line up between centrioles
    B. change into chromatin
    C. migrate to opposite poles of the cell.
    A
  19. During hemodialysis, if the concentration of glucose in the blood is higher than the concentration of glucose in the dialyzing fluid,
    A. glucose concentration of the blood will increase
    B. "" of the dialyzing fluid will increase.
    C. """ decrease.
    B
  20. Which of the following factors will cuase cancer?
    A. virus infections
    B. altered genes.
    C. exposure to radiation
    D. All of the above.
    D
  21. Which of the following is isotonic to red blood cells?
    A. .9 % NaCl solution
    B. distilled water
    D. .9 % glucose solution
    A
  22. Membrane proteins function as
    A. receptors
    B. pores
    C. selective channels.
    D. All
    D
  23. Rough ER has _ attached to its surface.
    ribosomes
  24. The spreading of molecules of ions from a region of higher concentration to lower concentration is
    diffusion
  25. An organelle that can be described as a fluid-filled membranous sac whose inner lining is folded to form partitions is a
    mitochondria
  26. Chemically, a cell membrane is composed largely of protein and
    lipids
  27. Osmosis is a special form of
    diffusion
  28. Tiny droplets of lipid can pass through a cell membrane by the process called
    phenocytosis
  29. The organelle that functions to "refine and package" cellular proteins for secretion is the
    golgi Apparatus
  30. Movement of sodium ions form a region of lower concentration inside a cell toward a region of higher concentration outside of the cell is
    active transport

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