The cell membrane
A) prevents communication with other cells.
B) provides an impermeable barrier between the inside and outside of the cell.
C) helps maintain a constant internal environment.
D) is covered in proteins that prevent adhesion to surfaces.
E) keeps hemoglobin within the plasma of the blood.

Question

Quizplus · Accepted Answer

The cell membrane helps maintain a constant internal environment by regulating the movement of substances into and out of the cell, such as nutrients and waste products.

The Cell Membrane