√100以上 endocytosis and exocytosis definition 274084-Simple definition of endocytosis and exocytosis
Exocytosis is the process of moving materials from within a cell to the exterior of the cell This process requires energy and is therefore a type of active transport Exocytosis is an important process of plant and animal cells as it performs the opposite function of endocytosisIn endocytosis, substances that are external to a cell are brought into the cellReceptorMediated Endocytosis In contrast to phagocytosis, which plays only specialized roles, pinocytosis is common among eukaryotic cellsThe bestcharacterized form of this process is receptormediated endocytosis, which provides a mechanism for the selective uptake of specific macromolecules (Figure 1236)The macromolecules to be internalized first bind to specific cellEnergy Usage Use more energy than endocytosis Use less energy than exocytosis Endocytosis Biology Britannica Simple definition of endocytosis and exocytosis