# Question #064b2

$N {a}^{+}$ having high difference in the concentration across membrane result in movement of $N {a}^{+}$ through simple diffusion but there is a small leakage which can occur sometime.
but they are not at all moved in high amount till the specific channels are opened and used by the cell to transport $N {a}^{+}$ from extracellular membrane to cytoplasm of cell or the other way around.