The membrane potential (V_m), a measure of the charge difference across the membrane depends upon the A) number of ions on each side of the membrane B) number of open ion channel C) charges of ions on each side of the membrane D) All choices will affect the membrane's ability to separate charges.

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All choices will affect the membrane's ability to separate charges. The membrane potential is created by the separation of charges across the membrane. The number of ions, number of open ion channels, and charges of ions on each side of the membrane will all influence this separation and therefore affect the membrane potential.

The Membrane Potential (Vm), a Measure of the Charge Difference

The Membrane Potential (V_m), a Measure of the Charge Difference