Know the three types of endocytosis
1. Endocytosis- cell encloses the substance in the membrane simultaneously forming a vacuole and engulfing it.
2. Phagocytosis- when a cell ingests whole cell or large solid matter by a type of endocytosis. (Think of this as engulfing SOLID)
3. Pinocytosis- how liquid, such as oil or molecules in solution enter cell (LIQUID)
4. Receptor Mediated- cells internalize molecules (endocytosis) by the inward budding of plasma membrane vesicles containing proteins with receptor sites specific to the molecules being internalized.