Learn what active transport is, how it works, and why it is important for cells. Find out the differences between primary and secondary active transport , and see examples and diagrams. Active transport is the process of moving molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration. This movement is against the concentration gradient and requires the cell to expend energy, typically in the form of ATP (adenosine triphosphate). It is essential for a cell to maintain internal concentrations of molecules like ions, glucose, and amino acids, which are necessary for various metabolic functions, even when their ... Learn the difference between active and passive transport and get examples of each type of transport process in the cell. Active Transport Active transport is one of the essential biological processes that ensures cells can maintain homeostasis and proper function. Unlike passive transport , which does not require energy, active transport uses energy to move molecules across cell membranes against their concentration gradient. This means that molecules move from areas of lower concentration to areas of higher concentration, a process that is necessary for cells to accumulate substances that are vital for their ...
