If the electrical and concentration gradients draw ions in opposite directions, the direction of net passive movement depends on the
A) strength of the electrical gradient.
B) strength of the concentration gradient.
C) strength of neither gradient.
D) strengths of both gradients.
E) the charge on the ion.

Question

Quizplus · Accepted Answer

The direction of net passive movement of ions when electrical and concentration gradients are in opposite directions depends on the strengths of both gradients. This is because both gradients can influence the movement of ions across a membrane, and the net movement is determined by the relative strengths of these opposing forces.

If the Electrical and Concentration Gradients Draw Ions in Opposite