GATE Biotechnology - GATE 2017-2018 Questions and Answers

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Discussion :: GATE Biotechnology

In a muscle, the extracellular and intracellular concentrations of Na⁺ are 150 mM and 12 mM, and those of K⁺ are 2.7 mM and 140 mM, respectively. Assume that the temperature is 25^oC and that the membrane potential is -60 mV, with the interior more negatively charged than the exterior. (R = 8.314 J mol^-1 K^-1; F = 96.45 kJ mol^-1 V^-1)

The free energy change for the transport of three Na⁺ out of the cell is

+1.5 kJ/mol

+17.4 kJ/mol

+18.9 kJ/mol

+36.3 kJ/mol

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