Final Exam

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Final Exam
2011-11-30 20:19:20

Chapter 1
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  1. Which are principal parts of a eukaryotic cell?
  2. Which particle can penetrate cell membranes most easily?
    Lipid soluble, transport protein present
  3. Which is inconsistent with the others?
  4. Which can transport substances uphill against the concentration gradient?
    active transport
  5. For a cell to engage in active transport processes, it requires:
    • All of the above are correct
    • - mitochondria, appropriate fuel, ATP, enzymes
  6. Caveolae:
    • All of the above are correct
    • -serve as repositories for some receptors, provide a route for transport into the cell, relay signals into cells
  7. Which statement is true for cytoplasm?
    • A,B and C
    • It is located outside the nucleus, it provides support for organelles, it is mostly water
  8. The retinoblastoma (Rb) Protein:
    • A, B and C are correct
    • is a brake on the progress of the cell cycle, binds to gene regulatory proteins, slows cell proliferation
  9. A major function of connective tissue is:
    support and binding
  10. Signaling molecules cause all of the following except:
    conversion of an intracellular signal into an extracellular response
  11. Increased cytoplasmic calcium:
    decreases permeability at the junctional complex
  12. Cell junctions:
    • Both A and C are correct
    • coordinate activities of cells within tissues, hold cells together
  13. Identify the correct sequence of events for initiation and conduction of a nerve impulse
    1. Sodium moves inside
    2. potassium leaves cell
    3. sodium permeability changes
    4. resting potential is reestablished
    5. Potassium permeability changes