試題詳解

35. Which of the following descriptions regarding the electrical properties of cellular membranes is correct?
(A) If the membrane is impermeable to an ion, the membrane potential approaches the equilibrium potential for that ion.
(B) The resting potential in most animal cells is between 20 mV and 120 mV (positive inside).
(C) Setting up (or changing) the membrane potential requires changing the bulk concentrations of the ions on the two sides of the membrane.
(D) The resting potential decays immediately following the inhibition of the Na+-K+ pump by a drug.
(E) None of the above.