The resting membrane potential of a cell is the consequence of which of the following concentrations of ions? A. High K + and Cl − outside the cell and high Na + and large anions inside the cell. B. High K + and Na + outside the cell and high Cl − and large anions inside the cell. C. High Cl − and Na + outside the cell and high K + and large cations inside the cell. D. High Ca 2+ and Na + outside the cell and high K + and large cations inside the cell.
Option C.These ionic species are mostly responsible for the membrane potential (cations are poor ions). While there is a higher concentration of Ca outside the mobile than inside, there are fewer Ca than Cl ions.
