Secondary Active Transport

Secondary Active Transport is a form of active transport in cells where energy from a previously established concentration gradient is used to move substances from a low to high concentration. It is used to move substances such as ions and small molecules across the membrane, even when the concentrations are not in favor of the movement. This process is significant as it does not only have applications in biology, but it is also used in medicine as well as in chemical engineering processes where pumps are needed to move substances against a concentration gradient.