Question

Section A Section B Section C
The most important function of cell membrane is
that it:
[1 mark]
controls only the exit of materials from cells.
allows entry and exit of materials without
any control.
controls only the entry of materials into cells.
controls the entry and exit of materials from
cells.​

Answer 1

Explanation:

cell membrane is semipermeable it alllows both entry and exit of materials

Answer 2

Controls the entry and exit of materials from cells