The process responsible for generating and conducting membrane potentials is:
A) Diffusion of current-carrying ions
B) Millivoltage of electrical potential
C) Polarization of charged particles
D) Ion channel neurotransmission
Ans: A
Feedback:
Membrane potentials rely on the permeability of the cell membrane and the diffusion of electrically charged ions. Charged particles are polarized (positive charge on one side of the membrane and negative charge on the opposite side of the membrane), but membrane potential exists when the charges are unbalanced on the two sides. Ion channel neurotransmitters are involved with opening protein channels for purposes of cell-to-cell communication.
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