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1. Selective permeability: The plasma membrane regulates the passage of substances in and out of the cell, allowing only certain molecules to enter or exit.
2. Cell signaling: The plasma membrane contains receptors that can detect signals from the cell's environment and initiate cellular responses.
3. Cell adhesion: The plasma membrane helps cells adhere to each other and to the extracellular matrix, maintaining the structure and integrity of tissues.
4. Cell recognition: The plasma membrane contains markers that identify the cell as belonging to a specific organism or tissue, allowing for recognition by other cells.
5. Transport of molecules: The plasma membrane contains proteins that facilitate the transport of molecules across the membrane, such as ion channels and transporters.
6. Cell communication: The plasma membrane allows cells to communicate with each other through the exchange of signaling molecules and the formation of gap junctions.
7. Protection: The plasma membrane acts as a barrier that protects the cell from harmful substances in the environment and helps maintain the cell's internal environment.
2. Cell signaling: The plasma membrane contains receptors that can detect signals from the cell's environment and initiate cellular responses.
3. Cell adhesion: The plasma membrane helps cells adhere to each other and to the extracellular matrix, maintaining the structure and integrity of tissues.
4. Cell recognition: The plasma membrane contains markers that identify the cell as belonging to a specific organism or tissue, allowing for recognition by other cells.
5. Transport of molecules: The plasma membrane contains proteins that facilitate the transport of molecules across the membrane, such as ion channels and transporters.
6. Cell communication: The plasma membrane allows cells to communicate with each other through the exchange of signaling molecules and the formation of gap junctions.
7. Protection: The plasma membrane acts as a barrier that protects the cell from harmful substances in the environment and helps maintain the cell's internal environment.
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