The Nernst and Goldman equations shown are used to predict membrane potentials. In the Goldman equation, "o" stands for outside or extracellular, "i" stands for inside or intracellular, and "p" stands for permeability.To use the Goldman equation as expressed to calculate the membrane potential of a cell, you must know the _______, as well as the membrane permeability for these ions.
A) total number of ions crossing the membrane
B) intracellular and extracellular concentrations of ions that cross the membrane
C) fraction of the ions crossing the membrane that are positive
D) concentration of the ions that are entering the cell
E) different charges on all the ions involved

Question

The Nernst and Goldman equations shown are used to predict membrane potentials.  In the Goldman equation, "o" stands for outside or extracellular, "i" stands for inside or intracellular, and "p" stands for permeability.To use the Goldman equation as expressed to calculate the membrane potential of a cell, you must know the _______, as well as the membrane permeability for these ions.
A) total number of ions crossing the membrane 
B) intracellular and extracellular concentrations of ions that cross the membrane 
C) fraction of the ions crossing the membrane that are positive 
D) concentration of the ions that are entering the cell 
E) different charges on all the ions involved

Quizplus · Accepted Answer

The Goldman equation requires knowledge of the intracellular and extracellular concentrations of ions that cross the membrane as well as the membrane permeability for these ions. The other options listed are not necessary for the Goldman equation.

The Nernst and Goldman Equations Shown Are Used to Predict