Now, this ion channel in this diagram is closed, and it will not allow the movement of any one of these ions. And let's suppose we're only focusing on two different types of ions. So we have these positively charged orange ions and these negatively charged green ions. Now, because this is closed and because the membrane is predominantly hydrophobic nonpolar, none of these ions will begin to pass across. Even though we have a concentration gradient that exists between the two sides. So we have a higher concentration here.