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  2. Ribosome - Wikipedia

    en.wikipedia.org/wiki/Ribosome

    When a ribosome begins to synthesize proteins that are needed in some organelles, the ribosome making this protein can become "membrane-bound". In eukaryotic cells this happens in a region of the endoplasmic reticulum (ER) called the "rough ER".

  3. Organelle - Wikipedia

    en.wikipedia.org/wiki/Organelle

    Although most organelles are functional units within cells, some function units that extend outside of cells are often termed organelles, such as cilia, the flagellum and archaellum, and the trichocyst (these could be referred to as membrane bound in the sense that they are attached to (or bound to) the membrane). Organelles are identified by ...

  4. Endoplasmic reticulum - Wikipedia

    en.wikipedia.org/wiki/Endoplasmic_reticulum

    The functions of the endoplasmic reticulum can be summarized as the synthesis and export of proteins and membrane lipids, but varies between ER and cell type and cell function. The quantity of both rough and smooth endoplasmic reticulum in a cell can slowly interchange from one type to the other, depending on the changing metabolic activities ...

  5. Endomembrane system - Wikipedia

    en.wikipedia.org/wiki/Endomembrane_system

    Glycoproteins on the membrane assist the cell in recognizing other cells, in order to exchange metabolites and form tissues. Other proteins on the plasma membrane allow attachment to the cytoskeleton and extracellular matrix; a function that maintains cell shape and fixes the location of membrane proteins. Enzymes that catalyze reactions are ...

  6. Cellular compartment - Wikipedia

    en.wikipedia.org/wiki/Cellular_compartment

    Cellular compartments in cell biology comprise all of the closed parts within the cytosol of a eukaryotic cell, usually surrounded by a single or double lipid layer membrane. These compartments are often, but not always, defined as membrane-bound organelles. The formation of cellular compartments is called compartmentalization.

  7. Intracellular transport - Wikipedia

    en.wikipedia.org/wiki/Intracellular_transport

    Microtubules function as tracks in the intracellular transport of membrane-bound vesicles and organelles. This process is propelled by motor proteins such as dynein . Motor proteins connect the transport vesicles to microtubules and actin filaments to facilitate intracellular movement. [ 1 ]

  8. Membrane bound polyribosome - Wikipedia

    en.wikipedia.org/wiki/Membrane_bound_polyribosome

    A membrane-bound polyribosome, as the name suggests, is composed of multiple ribosomes that are associated with a membrane.Proteins are synthesized via messenger ribonucleic acid (mRNA) from the nucleus being released either into the cytoplasm or into the rough endoplasmic reticulum. [3]

  9. Biological membrane - Wikipedia

    en.wikipedia.org/wiki/Biological_membrane

    Cross-sectional view of the structures that can be formed by phospholipids in an aqueous solution. A biological membrane, biomembrane or cell membrane is a selectively permeable membrane that separates the interior of a cell from the external environment or creates intracellular compartments by serving as a boundary between one part of the cell and another.