Question

carbohydrates are embedded in the cell membrane. why? they serve as id cards for the cell. they get stuck there and cant be removed.

Explanation:

Carbohydrates in the cell membrane, often in the form of glycoproteins or glycolipids, act as cell - specific markers. They help cells recognize each other (like in immune responses where the immune system distinguishes self - cells from non - self cells). The option “They serve as ID cards for the cell” aligns with this biological function. The option “They get stuck there and can't be removed” is incorrect as cell membrane components are dynamic (though carbohydrates are relatively stable in their location for the purpose of cell recognition, the reason is not that they are “stuck” in a non - functional sense).

Answer:

They serve as ID cards for the cell.