Yes, endocytosis requires energy to occur. This process involves the cell membrane engulfing extracellular material and bringing it into the cell. Because endocytosis involves the alteration of the cell membrane’s structure and the movement of materials within the cell, it relies on the energy provided by ATP (adenosine triphosphate).
During endocytosis, the cell uses energy to activate various proteins and facilitate the rearrangement of the lipid bilayer, which is essential for the formation of vesicles that carry substances into the cell. This energy-intensive process is crucial for cells to intake nutrients, hormones, and other necessary molecules from their environment, making it a vital function for cellular health and activity.