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  1. Plasma Membrane - Definition, Structure, Functions - Biology …

    Mar 26, 2019 · The main function of the plasma membrane is to protect the cell from its surrounding environment. It is semi-permeable and regulates the materials that enter and exit …

  2. Cell Membrane (Plasma Membrane) - Diagram, Structure, Function

    Sep 9, 2025 · It is a universal feature of all living cells, from bacteria to humans, and plays a crucial role in maintaining cellular integrity, regulating what enters and exits the cell, and …

  3. Plasma Membrane Functions | Components & Structures

    Feb 3, 2025 · The plasma membrane [1] is a biological membrane that serves as the boundary between the outer and inner cellular environment. This membrane also permits the cell itself to …

  4. Cell membrane | Definition, Function, & Structure | Britannica

    Oct 18, 2025 · It functions as a barrier, keeping cell constituents in and unwanted substances out, and as a gate, allowing transport into the cell of essential nutrients and movement from the cell …

  5. What Is the Structure and Function of the Cell Membrane?

    Nov 25, 2025 · Learn how the cell membrane’s dynamic structure defines cellular identity and actively governs all exchange and signaling required for life.

  6. Cell Membrane: Definition, Structure, & Functions with Diagram

    Feb 2, 2023 · The cell membrane, also called the plasma membrane, is a thin layer that surrounds the cytoplasm of all prokaryotic and eukaryotic cells, including plant and animal cells.

  7. What Is a Plasma Membrane? Function and Structure

    Aug 21, 2025 · Finally, the plasma membrane acts as a barrier, protecting the cell by separating its internal components from harmful substances.

  8. Plasma Membrane (Cell Membrane)

    2 days ago · The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different …

  9. Cell Membrane: Structure, Function, and Importance

    Aug 3, 2025 · It allows the membrane to self-heal when damaged, to deform during cell division or movement, and to host temporary protein assemblies that carry out specialized functions.

  10. Plasma Membrane - Definition, Structure, Components, Functions

    Jul 23, 2025 · The plasma membrane plays a pivotal role in endocytosis and exocytosis processes. It protects the cell from the external environment, governs interactions with …