The Na+/glucose transporter can carry glucose into a cell even against a gradient in which there is… Show more The Na+/glucose transporter can carry glucose into a cell even against a gradient in which there is more glucose inside the cell than outside. The energy to drive this process comes from the cotransport of 2 Na+ per glucose into the cell. The delta G for the inward transport of 1 mole of Na+ across the plasma membrane of a cell is -3 kcal/mol where the Na+ concentration outside the cell is 10 times higher than inside the cell, the membrane potential is -70 mV, Faraday’s constant is 23.06 kcal/V-mole, temp is 25 C and R=1.987 cal/mol Given the Delta G and the consitions above (i.e 2 Sodium per glucose transported) how steep of a concentration gradient of glucose can be generated by Na+ dependent glucose transport? • Show less



