Active Transport
Active Transport is the movements of ions or molecules across a Cell Membrane into a region of higher concentration, assisted by enzymes and requiring energy. This energy is usually provided in the form of ADP or ATP, types of sugar molecules produced in cells from more complex sugars. Active Transport requires the assistance of a type of protein called a carrier protein. Active Transport uses cellular energy to move them against a Gradient, Polar Repulsion, or other resistance. Active transport is usually associated with accumulating high concentrations of molecules that the cell needs, such as Ions, glucose and Amino Acids. There are three main types of Active Transports. The three main types of Active transports are: The Sodium-Potassium pump, Exocytosis, and Endocytosis. The sodium-potassium pump deals with the active transport of sodium and potassium inside and outside the cells. The transport of sodium and potassium is very significante to the body because it is used to maintain the homeostasis in the cells. The active transport of large particles in or out of the cell can be done with endocytosis. The largest partials can be disposed through endocytosis. Exocytosis has the opposite direction with endocytosis. It transports the substances or particles inside the cell to the outside of the cell.