Respuesta :
The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the lipid bilayer with embedded proteins.
The nucleus is the command center for the cell. It tells the whole cell how to function and what to do. I hope this helps. Ask me if you want me to explain more.