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- Dictionarynucleus/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
- 2. the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
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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.
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.
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.
The cell nucleus (from Latin nucleus or nuculeus 'kernel, seed'; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells usually have a single nucleus, but a few cell types, such as mammalian red blood cells, have no nuclei, and a few others including osteoclasts have many.
: a cellular organelle of eukaryotes that is essential to cell functions (such as reproduction and protein synthesis), is composed of nucleoplasm and a nucleoprotein -rich network from which chromosomes and nucleoli arise, and is enclosed in a definite membrane see cell illustration. b.
Oct 4, 2019 · Cell Nucleus Definition. The cell nucleus is a large organelle in eukaryotic organisms which protects the majority of the DNA within each cell. The nucleus also produces the necessary precursors for protein synthesis.
Sep 1, 2023 · Biology definition: 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.
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.
Nucleus definition: a central part about which other parts are grouped or gathered; core. See examples of NUCLEUS used in a sentence.
the central part of an atom, usually made up of protons and neutrons. KTSDesign/SCIENCEPHOTOLIBRARY/GettyImages. biology specialized. the part of a cell that controls its growth: DNA is stored in the nucleus of a cell. CHRISTOPH BURGSTEDT/SCIENCE PHOTO LIBRARY/GettyImages. the nucleus of something.
