Describe functions of cell membrane.
Functions of cell membrane.

1. It maintains the structure and form of the cell.

2. It keeps the cell contents in place and distinct from the environment materials.

3. It helps in the transport of materials in and out of the cell. By controlling flow of materials and information into the cell, the cell membrane makes metabolism possible.

4. It permits the exit of secretions and wastes materials.

5. It protects the cell from mechanical injury and other unfavourable factors.