Through the use of proteins. Most substances pass through the membrane with the aid of a protein and changing the shape or the frequence of that protein determines how much of the substance can cross.
They protect and hold the cells together. It controles wht goes in and out of the cell.
cell membrane
cell membrane
They help control what enters and leaves the cells.
"the cell membrane"
the nuclear membrane's job is to protect the nucleolus, and to control what goes in, and out of the membrane.
it controls what goes in and out of the cell.
They help control what enters and leaves the cells.
plasma membrane, cytoplasm, and control center
The function of the cell membrane is to hold the cell together and control what goes in and out of the cell.
The answer to the question is the cell membrane. The cell membrane is a biological membrane that seprates the interior of all cells from the outside enviorment. my answer by Ann: enzymes
Transport proteins are responsible for controlling what goes in and out of cells. These proteins are embedded in the cell membrane and facilitate the movement of specific molecules across the membrane. Examples include ion channels, carriers, and pumps.