Endocytosis occurs when the cell membrane engulfs particles (dark blue) outside the cell, draws the contents in, and forms an intracellular vesicle called an endosome. This vesicle travels through ...

Size Most are 5 μm - 100 μm. Most are 0.2 μm - 2.0 μm. Outer layers of cell Cell membrane, surrounded by cell wall in plants and fungi. Cell membrane, surrounded by cell wall. Cell contents ...