talayahtate47 talayahtate47 11-04-2022 Chemistry contestada A cell membrane acts as a boundary between the cell and its external environment. What is another role of the cell membrane? A. It stores nutrients for the cell. B. It synthesizes food for the cell. C. It helps keep the cytoplasm of the cell in a liquid state. D. It allows the cell to control the movement of materials in and out.