What governs the opening of the potassium channels, which establish the resting membrane potential in the plasma membrane of a neuron?
A) The potassium channels are always open.
B) The potassium channels open in response to an increase in the membrane potential.
C) The potassium channels open in response to an influx of sodium ions (Na+) into the neuron.
D) The potassium channels open in response to a decrease in the membrane potential.
E) The potassium channels open after binding a neurotransmitter.
Answer: A) The potassium channels are always open.
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