Question

The most important function of cell membrane is that it

Options

• controls the entry and exit of materials from cells

• controls only the entry of materials into cells

• controls only the exit of materials from cells

• allows entry and exit of materials without any control

Answer 1

controls the entry and exit of materials from cells

Explanation:

The cell membrane controls the entry (movement into the cell) and exit (movement out of the cell) of materials. It also protects and gives shape to the cell.