Answer:
The function of proteins and carbohydrates that are embedded in a cell membrane is:
B. They help control what enters and leaves the cell.
Step-by-step explanation:
Even though the most common contribution of proteins and carbohydrates is to provide energy to the cell. When they are attached to the membrane they work as catalyst or filter and they decide what type of substances pass through the cell membrane. This happens because their covalent links allow them to balance the membrane and identify the substances required to work properly.