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  1. Dictionary
    nucleus
    /ˈnjuːklɪəs/

    noun

    • 1. the central and most important part of an object, movement, or group, forming the basis for its activity and growth: "the nucleus of a British film-producing industry" Similar corecentrecentral partmost important part
    • 2. the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.

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  2. www.britannica.com › science › nucleus-biologyNucleus | Definition, Function, Structure, & Facts | Britannica

    Sep 18, 2024 · A nucleus is a specialized structure in most cells that contains the genetic material and controls the cell's activities. Learn about the nucleus's parts, functions, and how it differs from bacteria and blue-green algae.

  3. byjus.com › biology › the-nucleusWhat is a Nucleus?- Structure and Function of Nucleus - BYJU'S

    Learn what a nucleus is, how it is structured, and what functions it performs in eukaryotic cells. Find out the difference between nucleus and nucleoid, and take a quiz to test your knowledge.

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  5. www.sciencefacts.net › cell-nucleusCell Nucleus: Definition, Structure, & Function, with Diagram

    Feb 4, 2021 · A nucleus is a double membrane-bound organelle that contains the genetic material of eukaryotic cells. Learn about its structure, functions, and FAQs on this web page.

  6. biologynotesonline.com › nucleus-structure-and-functionsNucleus – Definition, Structure, Diagram, and Functions

    Apr 8, 2024 · The nucleus, a pivotal organelle within eukaryotic cells, serves as the repository for genetic material. Encased by a double-layered structure known as the nuclear envelope, it ensures the segregation of the nucleoplasm from the cytoplasm.

  7. Images

    • Cell Nucleus: Definition, Structure, & Function, with Diagram
    • Nucleolus - Wikipedia
    • Dna Nucleus Diagram
    • Nucleus - Definition and Examples - Biology Online Dictionary

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  8. dictionary.cambridge.org › dictionary › englishNUCLEUS | English meaning - Cambridge Dictionary

    Nucleus is a noun that means the central part of something, especially an atom or a cell. Learn how to use it in different contexts, see synonyms and related words, and hear the pronunciation.

  9. biologydictionary.net › cell-nucleusCell Nucleus (Plant & Animal) - Definition and Function | Biology

    Oct 4, 2019 · A cell nucleus is a large organelle in eukaryotic cells that protects and processes most of the DNA. Learn about the structure, function and examples of cell nuclei in plants and animals, and how they differ from prokaryotes and mitochondria.

  10. www.biologyonline.com › dictionary › nucleusNucleus - Definition and Examples - Biology Online Dictionary

    Sep 1, 2023 · A nucleus is a large double-membraned organelle that is sometimes referred to as the “central unit ” of the cell because it contains the chromosomes that bear the genetic material. It is not found only in eukaryotic cells and not in prokaryotic cells.