Question 9

(Multiple Choice)

The Nernst equilibrium potential for an ion that is 10 times more concentrated in the cytosol compared to the extracellular fluid is about -60 mV. How much would the potential be if the extracellular concentration decreases 100-fold with no change in the intracellular concentration?


A) -6000 mV
B) -6 mV
C) -600 mV
D) -20 mV
E) -180 mV

Answer