Answer:
The correct functions of the cell membrane are:
Explanation:
The cell membrane is known to be the gatekeeper of a cell. This is because it selectively regulates which materials to let enter into a cell and which materials need to be exited from the cell. Gases like oxygen and carbon dioxide can easily pass through the cell membrane by diffusion. The cell membrane stops the entry of any kind of harmful component into the cell hence, protecting the cell.