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  1. www.britannica.com › science › cell-membraneCell membrane | Definition, Function, & Structure | Britannica

    10 de may. de 2024 · Cell membrane, thin membrane that surrounds every living cell. The cell membrane 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 of waste products.

    • Endocytosis

      Other articles where endocytosis is discussed: horizontal...

    • Second Messenger

      second messenger, molecule inside cells that acts to...

    • Ion Channel

      ion channel, protein expressed by virtually all living cells...

  2. biologydictionary.net › cell-membraneCell Membrane - The Definitive Guide | Biology Dictionary

    19 de oct. de 2020 · Function of the Cell Membrane The cell membrane gives the cell its structure and regulates the materials that enter and leave the cell. It is a selectively permeable barrier, meaning it allows some substances to cross, but not others.

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  4. www.khanacademy.org › science › ap-biologyThe cell membrane review (article) | Khan Academy

    Key terms. Structure and function of the cell membrane. The cell membrane is semipermeable (or selectively permeable). It is made of a phospholipid bilayer, along with other various lipids, proteins, and carbohydrates. Image modified from OpenStax Biology. Each phospholipid is amphipathic, with two hydrophobic tails and a hydrophilic head.

  5. www.khanacademy.org › science › ap-biologyStructure of the plasma membrane (article) | Khan Academy

    The plasma membrane not only defines the borders of the cell, but also allows the cell to interact with its environment in a controlled way. Cells must be able to exclude, take in, and excrete various substances, all in specific amounts.

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    • [DIAGRAM] Diagram Of A Cell Membrane - MYDIAGRAM.ONLINE
    • Cell Membrane Definition Structure Amp Functions With Diagram - Riset
    • Cell Biology Glossary: Membrane Structure Overview | ditki medical ...
    • Cell Organelles - BIOLOGY JUNCTION

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  7. www.ncbi.nlm.nih.gov › books › NBK9928Cell Membranes - The Cell - NCBI Bookshelf - National Center for...

    Cell Membranes. The structure and function of cells are critically dependent on membranes, which not only separate the interior of the cell from its environment but also define the internal compartments of eukaryotic cells, including the nucleus and cytoplasmic organelles. The formation of biological membranes is based on the properties of ...

  8. www.nature.com › scitable › topicpageCell Membranes | Learn Science at Scitable - Nature

    Cell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in.

  9. openstax.org › books › anatomy-and-physiology-2e3.1 The Cell Membrane - Anatomy and Physiology 2e - OpenStax

    The cell membrane is an extremely pliable structure composed primarily of back-to-back phospholipids (a “bilayer”). Cholesterol is also present, which contributes to the fluidity of the membrane, and there are various proteins embedded within the membrane that have a variety of functions.