Imagine a cell with a plasma membrane permeable to K+ but not Cl-. At the start of the experiment there is 10 milliMolar (mM) KCl outside and 100 mM KCl inside. Explain your answers. a. At equilibrium will the concentration of K+ be equal on both sides of the membrane? b. At equilibrium will the bulk solution on the outside have a net negative charge? c. At equilibrium, will the inside surface of the plasma membrane be positive or negative?
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