Cell Membrane And Transport Quiz: MCQ Test!

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Cell Membrane And Transport Quiz: MCQ Test!

How much do you know about cell membrane and transport? The cell membrane's four primary functions include cell signaling, selective transport, excretion of wastes, and structural support. It is a thin, flexible coating around the cells of all living things. It is often described as the plasma membrane. Cell transport refers to the movement of substances across the cell membrane. This quiz is all about the study and function of cells.


Questions and Answers
  • 1. 
    What is the cell membrane composed of?
    • A. 

      Phospholipid bilayer with many other organic compounds

    • B. 

      Long amino acid chains

    • C. 

      Just a phospholipid bilayer

    • D. 

      Cytosol and eukaryotes

  • 2. 
    "That only certain things may enter or exit the cell, whereas others are not permitted to cross the cell membrane" is the best definition for what word?
    • A. 

      Selective transport

    • B. 

      Cell Membrane

    • C. 

      Selectively permeable

    • D. 

      Active Transport

  • 3. 
    What is the polar head of a phospholipid made of?
    • A. 

      Fatty Acids

    • B. 

      Vesicles

    • C. 

      Proteins

    • D. 

      Glycerol

  • 4. 
    The specific structure of the cell membrane depends on the function of the cell. Certain cells do not need what is needed in other cells?
    • A. 

      Phospholipids

    • B. 

      Carbohydrates

    • C. 

      Proteins

    • D. 

      Waxes

  • 5. 
    In the phospholipid bilayer which ways do the nonpolar tails face?
    • A. 

      Towards the interior

    • B. 

      Towards the exterior

    • C. 

      The directions are scattered

    • D. 

      No tails exist in the phospholipid bilayer

  • 6. 
    What is the cytoplasm made of?
    • A. 

      Microfibers

    • B. 

      The liquid cytosol

    • C. 

      Carbon dioxide and iron

    • D. 

      Plasma membrane

  • 7. 
    Where are peripheral proteins attached?
    • A. 

      The surface of the cell membrane

    • B. 

      The rough endoplasmic reticulum

    • C. 

      The golgi apparatus

    • D. 

      The interior of the cell membrane

  • 8. 
    Proteins are not embedded in the cell membrane.
    • A. 

      True

    • B. 

      False

  • 9. 
    Integral/ transmembrane proteins include what structure?
    • A. 

      Pumps

    • B. 

      Cell membrane

    • C. 

      Protein channels and carrier proteins

    • D. 

      Vesicles

  • 10. 
    Peripheral proteins are linked to lipids or proteins via strong bonds.
    • A. 

      True

    • B. 

      False

  • 11. 
    What organic compound is often attached to integral proteins?
    • A. 

      Carbohydrates

    • B. 

      Proteins

    • C. 

      Lipids

    • D. 

      DNA

  • 12. 
    What steroid is also embedded into the cell membrane? (This steroid reduces the fluidity of the cell membrane so it has some structure).
  • 13. 
    What is the main purpose of a cell?
    • A. 

      No real purpose

    • B. 

      To house little tiny elves

    • C. 

      Keep organisms structured

    • D. 

      To maintain homeostasis

  • 14. 
    What is the best definition of equilibrium?
    • A. 

      Slightly higher concentration outside the cell compared to the inside of the cell

    • B. 

      Equal amounts of a cell in different parts of an organism

    • C. 

      Equal concentrations of a substance inside and outside of the cell

    • D. 

      Slightly lower concentration inside the cell compared to the outside of the cell

  • 15. 
    What is one of the most important ways cells maintain homeostasis?
    • A. 

      Keeping the amount of cytoplasm at a certain level

    • B. 

      Keeping all the organelles of the cell healthy

    • C. 

      Controlling what the organelles in the cell do

    • D. 

      Controlling what moves across the cell membrane

  • 16. 
    Molecules prefer to congregate in one area.
    • A. 

      True

    • B. 

      False

  • 17. 
    The concentration gradient determines what?
    • A. 

      How fast a molecule crosses the membrane

    • B. 

      How fast the cell will fill up

    • C. 

      How fast the cell can move

    • D. 

      How fast the flagellum will be able to grab onto an object

  • 18. 
    The difference between concentrations is known as what?
  • 19. 
    If the concentrations are vastly different the molecules will move ___________, if the concentrations are similar the molecules will move  ___________.
    • A. 

      Slowly/quickly

    • B. 

      Quickly/slowly

    • C. 

      Quickly/at the same speed

    • D. 

      At the same speed/slowly

  • 20. 
    Equilibrium is..
    • A. 

      When one level of concentration is only slightly higher then the other

    • B. 

      When one level of concentration is only slightly lower then the other

    • C. 

      When two areas have reached equal concentration levels

    • D. 

      When water and another substance are mixed

  • 21. 
    Substance molecules will not stop moving when equilibrium is reached.
    • A. 

      True

    • B. 

      False

  • 22. 
    What are the three types of passive transport?
    • A. 

      Simple diffusion, facilitated diffusion and pumps

    • B. 

      Exocytosis, endocytosis, pumps

    • C. 

      Exocytosis, endocytosis, osmosis

    • D. 

      Simple diffusion, facilitated diffusion, and osmosis

  • 23. 
    Simple diffusion occurs when?
    • A. 

      When something moves from a higher concentration to a lower concentration randomly

    • B. 

      When something moves from a lower concentration to a higher concentration

    • C. 

      When something stays the same concentration

    • D. 

      When something starts to eat away at the cell membrane

  • 24. 
    When does active transport occur?
    • A. 

      When energy is needed to feed the cell

    • B. 

      When no energy is needed to help substances move

    • C. 

      When energy is needed to move a substance across the cell membrane

    • D. 

      When small bits of energy are needed to make the cell move more quickly

  • 25. 
    Active transport requires energy.
    • A. 

      True

    • B. 

      False