A Na⁺/K⁺ Pump Is Found in the Membranes of Many

Multiple Choice

A Na⁺/K⁺ pump is found in the membranes of many types of cells. Three Na⁺ ions are pumped out of the cell for every two K⁺ ions pumped into the cell. As a result, positive charge builds up outside the cell compared to inside the cell. The potential difference across the membranes allows neurons to generate electrical impulses that lead to nerve impulses. The direction of the electric field produced

A) is tangent to the neuron's surface.
B) points from inside toward outside.
C) points from outside toward inside.
D) There is no electric field.