Help Please!!! Points will be rewarded!!!!!!
Cell membranes are very important for all cells, because their selectively permeable structure allows materials to enter and exit the cell through passive and active transport.
This is possible because cell membranes have a ______ which allows both surfaces of the membrane to interact with water and other molecules.
A. Carbohydrate wall
B. Protein trilayer
C. Phospholipid bilayer
