Pope gregory vii not pope urban
The cell membrane<span> is selectively permeable to ions and organic molecules and controls the movement of substances in and out of </span>cells<span>. The basic </span>function<span> of the </span>cell membrane<span> is to protect the </span>cell<span> from its surroundings. It consists of the lipid bilayer with embedded proteins.</span>
Explanation:
to make their lives easier and more efficient