Cell Membrane Functioning and Ion Transport Quiz
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Questions and Answers

Which cation is the major cation found inside the cell?

  • Chloride (Cl-)
  • Proteins
  • Potassium (K+) (correct)
  • Sodium (Na+)
  • Which anion is the major anion outside the cell?

  • Potassium (K+)
  • Chloride (Cl-) (correct)
  • Sodium (Na+)
  • Proteins
  • Which cation is the major cation outside the cell?

  • Sodium (Na+) (correct)
  • Potassium (K+)
  • Proteins
  • Chloride (Cl-)
  • Which factor has a direct relationship with the rate of diffusion?

    <p>Temperature</p> Signup and view all the answers

    Which medium allows for the fastest diffusion?

    <p>Gases</p> Signup and view all the answers

    Which factor establishes an indirect relationship with the rate of diffusion?

    <p>Size of particles</p> Signup and view all the answers

    Which type of cells have membrane potential?

    <p>Excitable cells</p> Signup and view all the answers

    What determines the membrane potential?

    <p>The concentration of ions inside the cell</p> Signup and view all the answers

    What is the equilibrium potential?

    <p>The potential difference at which the electrical and chemical gradients for a certain ion are equal</p> Signup and view all the answers

    Which type of ion channel is responsible for the generation of local and action potentials?

    <p>Regulated (gated) ion channels</p> Signup and view all the answers

    What regulates the opening or closing of ligand-gated ion channels?

    <p>Neurotransmitters</p> Signup and view all the answers

    What determines the conductance of ion channels?

    <p>The probability of the channel being open or closed</p> Signup and view all the answers

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