The following describes a function of the plasma membrane:
Controlling the passage of various molecules.
Separating the interior of the cell and exterior of the cell.
Receiving cell signals.
- The plasma membrane is a semi-permeable membrane that surrounds the cell.
- It is specific for the intake or passage of molecules inside the cells and outside the cell.
- It only allows certain molecules to move through inside and outside the cell.
- Synthesis of protein is not the function of plasma membrane. It is the function of ribosomes.
- Separation of the interior of the cell from the exterior of the cells is also the function of the plasma membrane as it protects the cell from the external environment.
- It also receives the cell signals from the cell exterior by the neighboring cells or from the external environment of the cell.
Hence, controlling the passage of various molecules, separating the interior of the cell and exterior of the cell, and receiving cell signals are the functions of plasma membrane.
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