How is the cell membrane selectively permeable?
a. The cell membrane allows particles to freely move across the membrane.
b. The cell membrane chooses what will enter and leave the cell.
C. The cell membrane chooses only what will leave the cell.
d. The cell membrane chooses only what will enter the cell.
The cell membrane is selectively permeable, allowing only a limited number of materials to diffuse through its lipid bilayer. ... During passive transport, materials move by simple diffusion or by facilitated diffusion through the membrane, down their concentration gradient.
