The Goldm An-Ho Dgkin-Katz Current Equation Predicts the Current for the Ion

Question

The Goldm an-Ho dgkin-Katz current equation predicts the current for the ion is zero
A) W hen Em= the resting mem brane potential
B) W hen [X]o= [X]i
C) When Em= 0
D) When Em= Ex, the equlibrium potential for the ion
E) The current is never zero

Accepted Answer

The Goldman-Hodgkin-Katz current equation predicts the current for an ion is zero when the membrane potential (E_m) equals the equilibrium potential (E_x) for that ion. This is because at equilibrium, the electrical and chemical gradients balance each other out, resulting in no net movement of ions across the membrane, and thus no current.