Calculate the maximum ratio that can be achieved by the plasma membrane Na+-glucose symporter of an epithelial cell when [Na+]in is 12 mM, [Na+]out is 145 mM, the membrane potential is −50 mV (inside...

Calculate the maximum ratio that can be achieved by the plasma membrane Na⁺-glucose symporter of an epithelial cell when [Na⁺]in is 12 mM, [Na⁺]out is 145 mM, the membrane potential is −50 mV (inside negative), and the temperature is 37 °C.