On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids. ... Specialized proteins in the cell membrane regulate the concentration of specific molecules inside the cell.
On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids. ... Specialized proteins in the cell membrane regulate the concentration of specific molecules inside the cell.
