Final answer:
Glycoproteins are found on the exterior surface of the cell membrane.
Step-by-step explanation:
Glycoproteins are found on the exterior surface of the cell membrane, which is the outer leaflet. They are proteins that have carbohydrate chains attached to them and they play a role in cell-to-cell recognition. These carbohydrate chains are called glycans and they are part of the glycocalyx, which is the sugar coating on the cell surface.