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 (C)</p> Signup and view all the answers

Which medium allows for the fastest diffusion?

<p>Gases (A)</p> Signup and view all the answers

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

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

Which type of cells have membrane potential?

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

What determines the membrane potential?

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

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

<p>Neurotransmitters (B)</p> Signup and view all the answers

What determines the conductance of ion channels?

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

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