Unit 4 Target 5: Cell Membrane Transport Quiz

14 Questions | Total Attempts: 886

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Unit 4 Target 5: Cell Membrane Transport Quiz


Questions and Answers
  • 1. 
    Which of the following does NOT expend energy?
    • A. 

      Active transport

    • B. 

      A sodium-potassium pump

    • C. 

      Diffusion

    • D. 

      Endocytosis

  • 2. 
    Which means of particle transport requires input of energy from cell?
    • A. 

      Osmosis

    • B. 

      Diffusion

    • C. 

      Facilitated diffusion

    • D. 

      Active transport

  • 3. 
    By what process does a sodium ion exit a cell through plasma membrane?
    • A. 

      Facilitated diffusion

    • B. 

      Osmosis

    • C. 

      Active transport

    • D. 

      Exocytosis

  • 4. 
    Which of the following is NOT a characteristic of facilitated diffusion?
    • A. 

      It involves a change in the shape of its carrier.

    • B. 

      It moves substances against a concentration gradient.

    • C. 

      It requires no energy input.

    • D. 

      It requires a carrier protein.

  • 5. 
    The sodium-potassium pump usually pumps
    • A. 

      Sodium into the cell.

    • B. 

      Potassium into the cell.

    • C. 

      Potassium out of the cell.

    • D. 

      Both A and C.

  • 6. 
    Sugar molecules can enter cells through the process of
    • A. 

      Ion pumps.

    • B. 

      Facilitated diffusion.

    • C. 

      Osmosis.

    • D. 

      Exocytosis.

  • 7. 
    Molecules that are too large to be moved through the membrane can be transported INTO the cell by
    • A. 

      Diffusion.

    • B. 

      Endocytosis.

    • C. 

      Exocytosis.

    • D. 

      Lipid carriers.

  • 8. 
    When a cell produces a protein to be used in a different part of the body, through which type of transport does it LEAVE the cell?
    • A. 

      Osmosis

    • B. 

      Facilitated diffusion

    • C. 

      Endocytosis

    • D. 

      Exocytosis

  • 9. 
    Diffusion takes place
    • A. 

      Only through a lipid bilayer membrane.

    • B. 

      From an area of low concentration to an area of high concentration.

    • C. 

      Only in liquids.

    • D. 

      From an area of high concentration to an area of low concentration.

  • 10. 
    The diagram shows a cell membrane composed of a phospholipid bilayer with a channel protein. Each x represents the same type of molecule inside or outside the cell. Facilitated diffusion moves these molecules across the cell membrane.In what  direction do these molecules move and through which structure? 
    • A. 

      Into the cell through the channel protein

    • B. 

      Into the cell through the phospholipid

    • C. 

      Out of the cell through the channel protein

    • D. 

      Out of the cell through the phospholipid bilayer

  • 11. 
    Refer to the illustration above. The process shown is called 
    • A. 

      Osmosis.

    • B. 

      Facilitated diffusion.

    • C. 

      Active transport .

    • D. 

      Diffusion.

  • 12. 
    The diffusion of water across a selectively permeable membrane is called
    • A. 

      Osmosis.

    • B. 

      Osmotic pressure.

    • C. 

      Facilitated diffusion.

    • D. 

      Active transport.

  • 13. 
    As a result of diffusion, the concentration of many types of substances
    • A. 

      Always remains greater inside a membrane.

    • B. 

      Eventually becomes balanced on both sides of a membrane.

    • C. 

      Always remains greater on the outside of a membrane.

    • D. 

      Becomes imbalanced on both sides of a membrane.

  • 14. 
    The cytoplasm of red blood cells has a higher concentration of Na+ than does pure water. Suppose a biologist places a red blood cell in pure water. Is there a net flow of water molecules into or out of the red blood cell, and by which process does this net flow of water occur?
    • A. 

      Out of the cell; osmosis

    • B. 

      Into the cell; osmosis

    • C. 

      Out of the cell; active transport

    • D. 

      Into the cell; active transport

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