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- DictionaryNu·cle·us/ˈno͞oklēəs/
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 film-producing industry"
- 2. the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
nucleus: [noun] the small bright body in the head of a comet. the small brighter and denser portion of a galaxy (see galaxy 1b).
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. The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes.
The most integral component of the cell is the nucleus (plural: nuclei). It is derived from a Latin word which means “kernel of a nut”. Nucleus Definition: A nucleus is defined as a double-membraned eukaryotic cell organelle that contains the genetic material.
Sep 1, 2023 · Nucleus Definition. In biology, the term nucleus usually refers to the cell nucleus, which is defined as the organelle inside the cell containing the chromosomes. Not all cells though have a nucleus. When a cell lacks a nucleus the cell is described as anucleated. Apart from this definition, the nucleus is also used in other biological fields.
Feb 4, 2021 · What is a Nucleus. 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 word ‘nucleus’ (plural: nuclei) is derived ...
Nucleus definition: a central part about which other parts are grouped or gathered; core. See examples of NUCLEUS used in a sentence.
Nov 6, 2019 · Nuclear Envelope and Nuclear Pores . The cell nucleus is bound by a double membrane called the nuclear envelope.This membrane separates the contents of the nucleus from the cytoplasm, the gel-like substance containing all other organelles.The nuclear envelope consists of phospholipids that form a lipid bilayer much like that of the cell membrane. This lipid bilayer has nuclear pores that allow ...
The 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.
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 meaning: 1. the central part of an atom, usually made up of protons and neutrons 2. the part of a cell that…. Learn more.
