MCAT Question A Day - 6/9/14
A cell membrane is normally slightly passively permeable to potassium ions. If a neuronal membrane were to become suddenly impermeable to potassium ions but retain an active Na+/K+-ATPase, the neurons resting potential would:
A. become more positive because potassium ion concentration would increase inside the neuron.
B. become more positive because potassium ion concentration would increase outside the neuron.
C. become more negative because potassium ion concentration would increase inside the neuron.
D. become more negative because potassium ion concentration would increase outside the neuron.
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