Which of the following correctly describes some aspect of exocytosis or endocytosis?
1. endocytosis and exocytosis involve active transport.
these two processes require the participation of mitochondria.
2. both processes provide a mechanism for exchanging membrane-impermeable molecules between the organelles and the cytosol.
3. exocytosis and endocytosis change the surface area of the plasma membrane.
4. the inner surface of a transport vesicle that fuses with or buds from the plasma membrane is most closely related to the inner surface of the plasma membrane.