Answer the following question given this paragraph: 

In endocytosis, a substance or particle from outside the cell is engulfed by the cell membrane. The membrane folds over the substance and it becomes completely enclosed by the membrane. There are two main kinds of endocytosis: pinocytosis and phagocytosis.


Q: What is the term for a particle from outside the cell engulfing the cells membrane?


A:
endocytosis