Consider a hypothetical cell whose plasma membrane is impermeantto everything. The membrane is studded with channel proteins forCa2+, but these channels are initially closed. The concentration ofCa2+ outside the cell is 100 mM and the concentration of Ca2+inside the cell is 1 mM. Initally, the membrane potential is 0mV.
After a while, the net flow of Ca2+ ceases because dynamicequilibrium has been reached. What is the membrane potential of thecell when it reaches dynamic equilibrium? Show how you arrived atthis answer.
