Question

What is the function of proteins and carbohydrates that are embedded in a cell membrane?

They direct the reproduction process for the cell.
They act as storage molecules for water.
They help control what enters and leaves the cell.
They provide nutrients that the cell needs.

Answer 1

The answer is They help control what enters and leaves the cell

Answer 2

They help control what enters and leaves the cell.

Step-by-step explanation:

The only thing that can enter or leave through the membrane is water by osmosis.

All other kinds of substances need a facilitator to get in or out, and this is a protein.

Also, what "opens" a channel trough the phospholipids of the membrane are proteins, this is called Integral membrane protein.