Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 4

The Equilibrium Potential. Answer each of the following questions with respect to E Cl , the equilibrium potential for chloride ions. The chloride ion concentration inside the squid giant axon can vary from 50 to 150 mM.
(a)Before doing any calculations, predict whether E Cl will be positive or negative. Explain.
(b)Now calculate E Cl assuming an internal chloride concentration of 50 mM.
(c)How much difference would it make in the value of E Cl if the internal chloride concentration were 150 mM instead