The opening of a cation channel that allows both Na+ and K+ to move through will cause the membrane to _ _ because of the _.
A)depolarize : greater K+ electrochemical gradient as compared with Na+
B)hyperpolarize : greater K+ electrochemical gradient as compared with Na+
C)depolarize : greater Na+ electrochemical gradient as compared with K+
D)not change : same electrochemical gradient for K+ and Na+
E)hyperpolarize : greater Na+ electrochemical gradient as compared with K+

Question

Quizplus · Accepted Answer

The membrane will depolarize because the electrochemical gradient for Na+ is greater than that for K+, leading to more Na+ influx than K+ efflux.

The Opening of a Cation Channel That Allows Both Na