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.
Active and passive transport are biological processes that move oxygen, water and nutrients into cells and remove waste products. Active transport requires chemical energy because it is the movement of biochemicals from areas of lower concentration to areas of higher concentration.On the other hand, passive trasport moves biochemicals from areas of high concentration to areas of low concentration; so it does not require energy.efinition. Active Transport uses ATP to pump molecules AGAINST/UP the concentration gradient. Transport occurs from a low concentration of solute to high concentration of solute. Requires cellular energy. Movement of molecules DOWN the concentration gradient.