Excitable Cells and Electrical Signaling Quiz
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Questions and Answers

Which type of ion channels are regulated by chemical messengers called ligands?

  • Ligand-gated ion channels (correct)
  • ATP-gated ion channels
  • Mechanically-gated ion channels
  • Voltage-gated ion channels

    • What is the definition of excitability?

  • The ability of a cell to regulate ion concentration
  • The ability of a cell to produce ATP
  • The ability of a cell to divide and reproduce
  • The ability of a cell to send and receive electrical signals across the plasma membrane (correct)

    • Which ions move into the cell during excitation?

  • Potassium and calcium
  • Potassium and sodium
  • Chloride and calcium
  • Sodium, chloride, and calcium (correct)

    • What type of ion channels are regulated by changes in charge in the surrounding environment?

    <p>Voltage-gated ion channels</p> Signup and view all the answers

    Which type of ion moves out of the cell during excitation?

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

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