There are probably many opinions about what makes a relationship work...being in love with someone gets the ball rolling, but it's said that love is what keeps it moving. I have discovered that in order to have a successful happy relationship, you have to have a little of both.
There are three main types of Active Transport: The Sodium-Potassium pump, Exocytosis, and Endocytosis. The Sodium-Potassium Pump is a structure known as a cell-membrane pump that uses energy to transport Sodium and Potassium ions in and out of the cell.
Examples of Active Transport. Transport that is âactiveâ is different in that it requires the energy of certain membrane proteins to get across the concentration gradient and either into or out of the cell. It requires more from the cell and it usually costs something in terms of energy and nutrient expenditure, too.