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

Question

A. Designed to allow for the free flow of all protein substances to move into and out of the cell
B. Composed of two layers of proteins and carbohydrates only
C. Designed to allow certain substances to enter and certain substances to exit 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:

C. Designed to allow certain substances to enter and certain substances to exit the cell.

This reflects the selective permeability of the plasma membrane, which is primarily composed of a phospholipid bilayer and embedded proteins that regulate the movement of substances in and out of the cell.