Matt Carpenter stands out for what he doesn't wear. Cardinals' Matt Carpenter swings at a pitch in the seventh inning during a game between the St. Louis Cardinals and the Chicago Cubs on April 15, 2012, at Busch Stadium in St. Louis. Photo by Chris Lee, clee@post-dispatch.com.
Exocytosis. Exocytosis is the reverse of endocytosis. Quatities of material are expelled from the cell without ever passing through the membrane as individual molecules. By using the processes of endocytosis and exocytosis, some specialized types of cells move large amounts of bulk material into and out of themselves.ndocystosis, is a general term for the process whereby very large particles of material are wrapped with plasma membrane and moved into the cell in the form of vesicles or vacuoles.
This process requires energy and is a type of active transport. Exocytosis is the opposite of endocytosis in which substances are taken into cells. In exocytosis, membrane-bound vesicles containing cellular molecules are transported to the cell membrane. The vesicles fuse with the cell membrane and expel their contents to the exterior of the cell. Exocytosis is a vital process that allows cells to secrete waste substances, as well as molecules such as hormones and proteins.