Final answer:
The resting membrane potential of a cell at 37 °C, based solely on potassium ions, is about -70 mV. This potential is maintained by the difference in ion concentrations inside and outside the cell, with leakage channels allowing potassium ions to move out of the cell.About -70 mV
Step-by-step explanation:
The resting membrane potential of a cell at 37 °C, based solely on K+, with [K+]i = 150 mMol / L and [K+]o = 5 mMol / L is about -70 mV.
The resting membrane potential is maintained by the difference in the concentrations of ions inside and outside the cell, primarily potassium and sodium.
Leakage channels allow potassium ions to slowly move out of the cell, creating a net negative charge inside the cell and resulting in the resting membrane potential.