Concentration differences cause ionic imbalances that polarize the cell membrane.

Answer;

-The above statement is true

Explanation;

Concentration differences cause ionic imbalances that polarize the cell membrane, and active transport processes.

The inside of the cell has a low concentration of sodium ions, and the outside of the cell has a higher concentration of sodium ions.The cell membrane separates the inside of a cell (all cells, not just neurons) from the outside, and all chemicals that get into and out of the cell must go thorough it. As in all cells, the cell membrane of a neuron is polarized. This means that there is an electrical difference across the cell membrane.

a physical change is being made.