Which ion(s)have a net chemical force acting to move the ion(s)into the cell? (Assume a resting membrane potential (Vm)of - 70mV.)

Question

Quizplus · Accepted Answer

The net chemical force acting on an ion is determined by the concentration gradient and the electrical gradient. For X+, the concentration gradient is outward (120 mM outside, 30 mM inside), and the electrical gradient is inward (Vm = -70 mV). The net chemical force is therefore inward. For B-, the concentration gradient is inward (140 mM outside, 30 mM inside), and the electrical gradient is outward (Vm = -70 mV). The net chemical force is therefore inward.

Which Ion(s)have a Net Chemical Force Acting to Move the Ion(s)into