Final answer:
The cell membrane is made of a phospholipid bilayer, controls what enters and leaves the cell, and is not a rigid structure made of cellulose.
Step-by-step explanation:
The correct statement that applies to the cell membrane is that it is made of a phospholipid bilayer. The cell membrane is composed of two layers of phospholipids, which have a hydrophilic (water-loving) head and a hydrophobic (water-fearing) tail. This arrangement forms a barrier that controls the movement of substances in and out of the cell.
Contrary to one of the given statements, the cell membrane can control what enters and leaves the cell. It does this through various mechanisms such as selective permeability and active transport. These processes allow the membrane to regulate the passage of ions, molecules, and nutrients.
Lastly, the cell membrane is not a rigid structure made of cellulose. While cellulose is a component of the cell walls in plant cells, the cell membrane is a flexible and dynamic structure that surrounds the cell, separating its internal environment from the external surroundings.
Learn more about The structure and function of the cell membrane