Cell Membrane And Transport Questions: Quiz!

22 Questions | Total Attempts: 259

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Cell Membrane And Transport Questions: Quiz!

Do you have an opinion on the cell membrane and transport? The cell membrane is a structure that surrounds the cell’s cytoplasm. It supports the integrity of the cell and its assisting cell, which helps it maintain its shape. Cell membranes are typically made of proteins and lipids. Transport proteins are often referred to as globular proteins. This exciting quiz will answer all of your questions on the cell membrane and transport.


Questions and Answers
  • 1. 
    When the concentration of molecules on both sides of a membrane is the same, the molecules will
    • A. 

      Move across the membrane to the outside of the cell

    • B. 

      Stop moving across the membrane.

    • C. 

      Move across the membrane in both directions.

    • D. 

      Move across the membrane to the inside of the cell.

  • 2. 
    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.

  • 3. 
    Which of the following is a function of the cell membrane?
    • A. 

      Breaks down lipids, carbohydrates, and proteins from foods

    • B. 

      Stores water, salt, proteins, and carbohydrates

    • C. 

      Keeps the cell wall in place

    • D. 

      Regulates which materials enter and leave the cell

  • 4. 
    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 a cross 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 bilayer

    • C. 

      Out of the cell through the channel protein

    • D. 

      Out of the cell through the phospholipid bilayer

  • 5. 
    Which of the following structures serves as the cell’s boundary from its environment?
    • A. 

      Mitochondrion

    • B. 

      Cell Membrane

    • C. 

      Chloroplast

    • D. 

      Channel Proteins

  • 6. 
    The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of?
    • A. 

      Carbohydrates

    • B. 

      Lipids

    • C. 

      Bilipids

    • D. 

      Proteins

  • 7. 
    When a small neutral molecule becomes an ion, in which way is it better able to function?
    • A. 

      Dissolving in blood plasma

    • B. 

      Sharing electrons with other ions

    • C. 

      Combining with ions of similar charges

    • D. 

      Passing through a cell’s plasma membrane

  • 8. 
    Which of the following does NOT expend energy?
    • A. 

      Diffusion

    • B. 

      Endocytosis

    • C. 

      Active Transport

    • D. 

      Sodium-Potassium Pump

  • 9. 
    Which means of particle transport requires the input of energy from the cell?
    • A. 

      Diffusion

    • B. 

      Osmosis

    • C. 

      Facillitated Diffusion

    • D. 

      Active Transport

  • 10. 
    Biochemists have created an artificial cell membrane that they hope to insert into artificial red blood cells for future dehydration and transportation into outer space. When scientists stain natural cell membranes with heavy metal, they can view the membranes with an electron microscope. The heavy metal stains the polar hydrophilic heads of phospholipid membranes. If the artificial membranes resemble natural membranes, what area(s), when viewed under a microscope, would appear stained? (Note: Shading represents stains.)
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 11. 
    By what process does a sodium ion exit a cell through the plasma membrane?
    • A. 

      Active Transport

    • B. 

      Exocytosis

    • C. 

      Facillitated Diffusion

    • D. 

      Osmosis

  • 12. 
    Refer to the illustration above. The process shown is called
    • A. 

      Osmosis

    • B. 

      Facillitated Diffusion

    • C. 

      Active Transport

    • D. 

      Diffusion

  • 13. 
    A scientist places a cell in a solution, and over time the cell gains mass and swells. What is the most likely explanation for the cell’s gain in mass?
    • A. 

      The solution is hypertonic to the cell

    • B. 

      The solution and the cell have equal concentrations of solutes

    • C. 

      The solution is hypotonic to the cell

    • D. 

      The solution and the cell have equal concentrations of water

  • 14. 
    The diffusion of water across a selectively permeable membrane is called
    • A. 

      Osmotic pressure

    • B. 

      Osmosis

    • C. 

      Facilitated diffusion

    • D. 

      Active transport

  • 15. 
    As a result of diffusion, the concentration of many types of substances.
    • A. 

      Always remains great 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 imbalance on both sides of a membrane

  • 16. 
    Which of the following is NOT characteristic of facilitated diffusion? A) It requires a carrier protein.   B) It moves substances against a concentration gradient.   C) It requires no energy input.   D) It involves a change in the shape of its carrier.
    • A. 

      It requires a carrier protein

    • B. 

      It moves substances against a concentration gradient

    • C. 

      It requires no energy input

    • D. 

      It involves a change in the shape of its carrier

  • 17. 
    The sodium-potassium pump usually pumps_______________
    • A. 

      Potassium out of the cell

    • B. 

      Sodium into the cell

    • C. 

      Potassium into the cell

    • D. 

      Only a potassium and sugar molecule together

  • 18. 
    Sugar molecules can enter cells through the process of?
    • A. 

      Exocytosis

    • B. 

      Facilitated diffusion

    • C. 

      Osmosis

    • D. 

      Ion pumps

  • 19. 
    Molecules that are too large to be moved through the membrane can be transported into the cell by?
    • A. 

      Osmosis

    • B. 

      Endocytosis

    • C. 

      Lipid carriers

    • D. 

      Diffusion

  • 20. 
    Placing a plant into a hypertonic environment will
    • A. 

      Cause turgor pressure to increase

    • B. 

      Cause the plant to take in water

    • C. 

      Have no effect

    • D. 

      Cause turgor pressure to decrease

  • 21. 
    Red blood cells have a salt content of 0.9%. When a microbiologist places red blood cells in pure water, osmosis occurs. What net movement of a substance occurs in this instance of osmosis?
    • A. 

      Water molecules move out of the cells

    • B. 

      Water molecules move into the cells

    • C. 

      Salt ions move out of the cells

    • D. 

      Salt ion move out of the cells

  • 22. 
    A Paramecium lives in an environment that is hypotonic to its cytoplasm. How does the Paramecium maintain homeostasis under these conditions? A) It expels excess water using contractile vacuoles.   B) It expels excess sodium using the sodium-potassium pump.   C) It absorbs additional water through osmosis.   D) It absorbs additional sodium through facilitated diffusion.
    • A. 

      It expels excess water using contractile vacuoles

    • B. 

      It expels excell sodium using the sodium-potassium pump

    • C. 

      It absorbs additional water through osmosis

    • D. 

      It absorbs additional sodium through facilitated diffusion