Answer:
As receptor, cell identity
Explanation:
In most of animal cells, there is carbohydrate layer out of cell membrane. This structure is embedded tightly with the membrane. In terms of composition, this is named glicocalyx or carbohydrate-rich layer.
Glycocalix can be glycoprotein if carbohydrate bind to protein, while glycolipid if lipid bind to its carbohydrate. Both of them provide as reseptor to communicate with another cell.
These structures also acts as cell identity. For example in blood type categorization, which determine the type of blood and antigenic traits. It also provide a sign as “self cell” and “foreign cell” in immune system. This concepts has an essential role in organ transplant compatibility.
Learn more about glycocalyx at https://brainly.com/question/24623301
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