what is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell?
A. Passive transport
B.Diffusion
C. Endocytosis
D. Exocytosis
Answer: C. Endocytosis
In endocytosis, the cell membrane forms a cup-like sac around the molecule, the two lips of the cup meet around the molecule so that a vesicle is formed by the separation of that part of the cell membrane.
