Final answer:
Active transport, including endocytosis, requires ATP as energy for the movement of substances against their concentration gradient.
Explanation:
Active transport is the type of cell transport that requires energy in the form of ATP. This process involves the movement of substances against their concentration gradient with the help of protein pumps or vesicles. Endocytosis, a form of active transport, is a process in which the cell engulfs extracellular materials, requiring ATP.
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