Pinocytosis is the transport of fluid into a cell by infoldings at the cell membrane so that a tiny vesicle are forms, which is then moves into the interior allowing liquid to enter the cell by having the pinocytotic vesicle dissolve into the cell membrane. These vesicles also fuse with lysosomes to hydrolyze particles, this process requires energy.
Endocytosis is a process when material can go into the cell without passing though the cell membrane, but with vesicles.There are two other types of endocytosis apart from pinocytosis:
Phagocytosis, which is like the pinocytosis but it engulfs larger particles and contains hydrolytic enzymes to break down the material. Phagocytosis is found in macrophages and white blood cells.
Receptor Mediated Endocytosis takes place at a region of the cell membrane with specific receptors which can transport hormones, growth factor, cholesterol and ions.
Endocytosis: Three types
