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Nucleus | Definition, Function, Structure, & Facts | Britannica
https://www.britannica.com/science/nucleus-biology
WebFeb 28, 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. The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes.
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Nucleus Definition & Meaning - Merriam-Webster
https://www.merriam-webster.com/dictionary/nucleus
Webˈnyü- also nucleuses. Synonyms of nucleus. 1. a. : the small bright body in the head of a comet. b. : the small brighter and denser portion of a galaxy (see galaxy sense 1b) 2. : a …
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What is a Nucleus?- Structure and Function of Nucleus - BYJU'S
https://byjus.com/biology/the-nucleus/
WebA 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.
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NUCLEUS Definition & Usage Examples | Dictionary.com
https://www.dictionary.com/browse/nucleus
WebPhysics. the positively charged mass within an atom, composed of neutrons and protons, and possessing most of the mass but occupying only a small fraction of the volume of the atom. …
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NUCLEUS | English meaning - Cambridge Dictionary
https://dictionary.cambridge.org/dictionary/english/nucleus
Webthe central part of something. People or things that form the nucleus of something are the most important part of it: These two people will form the nucleus of a new management …
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Nucleus - National Human Genome Research Institute
https://www.genome.gov/genetics-glossary/Nucleus
Web6 days ago · Definition. A nucleus, as related to genomics, is the membrane-enclosed organelle within a cell that contains the chromosomes. An array of holes, or pores, in the nuclear membrane allows for the selective passage of certain molecules (such as proteins and nucleic acids) into and out of the nucleus.
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Cell nucleus - Wikipedia
https://en.wikipedia.org/wiki/Cell_nucleus
WebThe 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.
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Nucleus - Definition and Examples - Biology Online Dictionary
https://www.biologyonline.com/dictionary/nucleus
WebSep 1, 2023 · Definition: a large organelle in eukaryotic cells that contain genetic material. Table of Contents. In cell biology, the nucleus is the large, membrane-bounded organelle that contains the genetic material in the form of multiple linear DNA molecules organized into structures called chromosomes.
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NUCLEUS | definition in the Cambridge English Dictionary
https://dictionary.cambridge.org/us/dictionary/english/nucleus
Webthe 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. the group …
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Nucleus and ribosomes (article) | Khan Academy
https://www.khanacademy.org/science/biology/structure-of-a-cell/prokaryotic-and-eukaryotic-cells/a/nucleus-and-ribosomes
WebThe nucleus (plural, nuclei) houses the cell’s genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins. Inside the nucleus, chromatin (DNA wrapped around proteins, described further below) is stored in a gel-like substance called nucleoplasm.
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