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  2. Biomolecular condensate - Wikipedia

    en.wikipedia.org/wiki/Biomolecular_condensate

    Formation and examples of membraneless organelles. In biochemistry, biomolecular condensates are a class of membrane-less organelles and organelle subdomains, which carry out specialized functions within the cell. Unlike many organelles, biomolecular condensate composition is not controlled by a bounding membrane.

  3. Organelle - Wikipedia

    en.wikipedia.org/wiki/Organelle

    The non-membrane bounded organelles, also called large biomolecular complexes, are large assemblies of macromolecules that carry out particular and specialized functions, but they lack membrane boundaries. Many of these are referred to as "proteinaceous organelles" as their main structure is made of proteins.

  4. Inclusion (cell) - Wikipedia

    en.wikipedia.org/wiki/Inclusion_(cell)

    Examples of inclusions are glycogen granules in the liver and muscle cells, lipid droplets in fat cells, pigment granules in certain cells of skin and hair, and crystals of various types. [3] Cytoplasmic inclusions are an example of a biomolecular condensate arising by liquid-solid, liquid-gel or liquid-liquid phase separation .

  5. 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.

  6. Archaea - Wikipedia

    en.wikipedia.org/wiki/Archaea

    No membrane-bound organelles (? [70]) or nucleus: No membrane-bound organelles or nucleus Membrane-bound organelles and nucleus Metabolism [71] Various, including diazotrophy, with methanogenesis unique to Archaea Various, including photosynthesis, aerobic and anaerobic respiration, fermentation, diazotrophy, and autotrophy

  7. Subcellular localization - Wikipedia

    en.wikipedia.org/wiki/Subcellular_localization

    The cytoplasm, the cytoplasmic membrane and the cell wall are subcellular localizations, whereas the extracellular environment is clearly not. Most Gram-negative bacteria also contain an outer membrane and periplasmic space. Unlike eukaryotes, most bacteria contain no membrane-bound organelles, however there are some exceptions (i.e ...

  8. Unicellular organism - Wikipedia

    en.wikipedia.org/wiki/Unicellular_organism

    Eukaryotic cells contain membrane bound organelles. Some examples include mitochondria, a nucleus, or the Golgi apparatus. Prokaryotic cells probably transitioned into eukaryotic cells between 2.0 and 1.4 billion years ago. [31] This was an important step in evolution. In contrast to prokaryotes, eukaryotes reproduce by using mitosis and meiosis.

  9. Domain (biology) - Wikipedia

    en.wikipedia.org/wiki/Domain_(biology)

    [3] [4] In the three-domain model, the first two are prokaryotes, single-celled microorganisms without a membrane-bound nucleus. All organisms that have a cell nucleus and other membrane-bound organelles are included in Eukarya and called eukaryotes. Non-cellular life, most notably the viruses, is not included in this system