Yahoo Malaysia Web Search

Sign In

Search results

  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.

    Powered by Oxford Dictionaries

    More definitions, origin and scrabble points

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

    May 27, 2024 · nucleus, in biology, a specialized structure occurring in most cells (except bacteria and blue-green algae) and separated from the rest of the cell by a double layer, the nuclear membrane.

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

    A nucleus is defined as a double-membraned eukaryotic cell organelle that contains the genetic material. A nucleus diagram highlighting the various components. Moreover, only eukaryotes have the nucleus, prokaryotes have the nucleoid.

  4. www.merriam-webster.com › dictionary › nucleusNucleus Definition & Meaning - Merriam-Webster

    The meaning of NUCLEUS is the small bright body in the head of a comet. How to use nucleus in a sentence.

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

    NUCLEUS definition: 1. the central part of an atom, usually made up of protons and neutrons 2. the part of a cell that…. Learn more.

  6. en.wikipedia.org › wiki › Cell_nucleusCell nucleus - Wikipedia

    The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expression . Because the nuclear envelope is impermeable to large molecules, nuclear pores are required to regulate nuclear transport of molecules across the envelope.

  7. 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.

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

    Feb 4, 2021 · The nucleus is a double membrane-bound organelle located centrally only in a eukaryotic cell, enclosing the DNA, the genetic material. It is the most important and defining feature of all higher organisms, including plant and animal cells, whose main function is to control and coordinate the functioning of the entire cell.

  9. www.dictionary.com › browse › nucleusNUCLEUS Definition & Meaning | Dictionary.com

    Nucleus definition: a central part about which other parts are grouped or gathered; core. See examples of NUCLEUS used in a sentence.

  10. microbenotes.com › nucleus-structure-and-functionsNucleus: Definition, Structure, Parts, Functions, Diagram

    Oct 31, 2023 · The nucleus is separated from the rest of the cell or the cytoplasm by a nuclear membrane. As the nucleus regulates the integrity of genes and gene expression, it is also referred to as the control center of a cell. Figure: Diagram of Nucleus.

  11. dictionary.cambridge.org › us › dictionaryNUCLEUS | definition in the Cambridge English Dictionary

    NUCLEUS meaning: 1. the central part of an atom, usually made up of protons and neutrons 2. the part of a cell that…. Learn more.