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  1. Membrane - Wikipedia

    Physical cleaning techniques for membrane include membrane relaxation and membrane backwashing. Back-washing or back-flushing consists of pumping the permeate in the reverse direction through the …

  2. Membrane | Definition, Structure, & Functions | Britannica

    Membrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment.

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

    Sep 9, 2025 · The cell membrane (or plasma membrane) is a selectively permeable barrier that encloses the cell. It consists mainly of a phospholipid bilayer with embedded proteins, cholesterol, …

  4. Plasma Membrane (Cell Membrane) - National Human Genome ...

    3 days ago · The plasma membrane, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. In bacterial and plant cells, a cell …

  5. Cell Membrane: Structure, Function, and Importance

    Aug 3, 2025 · Though often overshadowed by more glamorous components like the nucleus or mitochondria, the cell membrane—also known as the plasma membrane—is nothing short of …

  6. 3.1 The Cell Membrane – Anatomy & Physiology 2e

    This cell membrane provides a protective barrier around the cell and regulates which materials can pass in or out. Structure and Composition of the Cell Membrane The cell membrane is an extremely …

  7. 3.2 Structure and Composition of the Cell Membrane

    The cell membrane is a very flexible bilayer (meaning it has two layers) made up of molecules called phospholipids. A single phospholipid molecule has a phosphate group on one end, called the “head,” …