Question 5
(Multiple Choice)
The resting membrane potential of a cell is -85 mV.The intracellular and extracellular concentrations of several ions are indicated in the following table,as is the calculated Nernst equilibrium potential (Ei)for each of these ions: 
The membrane has channels for Na+,K+,Cl-,and Ca++.The conductance of the membrane is the greatest for which ion?
A)Na+
B)K+
C)Cl-
D)Ca++
Answer