Which statement best describes the plasma membrane of a living plant cell?

Question

The plasma membrane of a plant cell is

a
designed to allow certain substances to enter and certain substances to exit the cell.
b
composed of two layers of proteins and carbohydrates only.
c
designed to allow for the free flow of all protein substances to move into and out of the cell.
d
composed of two layers of proteins with floating molecules of lipids only.

Answer 1

The statement that best describes the plasma membrane of a living plant cell is:

a. designed to allow certain substances to enter and certain substances to exit the cell.

This accurately reflects the selective permeability of the plasma membrane, which regulates the movement of substances in and out of the cell. The other options do not correctly describe the composition or function of the plasma membrane.