Exploring Nerve Signaling
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Questions and Answers

Which type of ion channels open and close depending on changes in the cell membrane?

  • Voltage gated channels (correct)
  • Mechanically gated channels
  • Phosphorylation gated channels
  • Ligand gated channels

What determines the ion selectivity of an ion channel?

  • The functional states of the channel
  • The type of ions present in the cell membrane
  • The number of protein molecules in the channel
  • The diameter of the pore (correct)

Which functional state of an ion channel is associated with the resting membrane potential?

  • Closed and activatable (correct)
  • Open
  • Closed and non-activatable
  • All of the above

What contributes to the resting membrane potential?

<p>Diffusion of ions and electromagnetic forces (D)</p> Signup and view all the answers

What is the typical value of the resting membrane potential?

<p>-70mV (D)</p> Signup and view all the answers

What is depolarization of the membrane potential?

<p>Vm&gt;-70mV (D)</p> Signup and view all the answers

What is hyperpolarization of the membrane potential?

<p>Vm&lt;-70mV (A)</p> Signup and view all the answers

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