A cell\'s resting potential is primarily determined by the balance between the e

Question

A cell's resting potential is primarily determined by the balance between the electrostatic potential energy acting to drive potassium ions into the cell and the reduction in free energy that would result from balancing the concentration of potassium ions inside and outside the cell. If the concentration of k+ ions inside the cell is 150mm and outside is 15mm, find the resting potential. assume that the membrane is 5nm thick; the faraday constant is 2.4x104 cal/v mole; and the cell is at body temperature.

Explanation / Answer

membrane potential = RT [X out / X in] / F

potential = 8.314 X 309.8 [ 15 / 150] / 96500

Potential = -0.061 V

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