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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.
Sep 19, 2023 · The cell nucleus is the most noticeable organelle within the eukaryotic cell, and perhaps the most important and defining feature of the eukaryotic cells. Most of the genetic material (DNA) is contained in the nucleus, while a small amount of it is found in mitochondria.
An organelle in the cytoplasm of eukaryotic cells (all cells except prokaryotes) that contains nearly all the cell's DNA and controls its metabolism, growth, and reproduction. The nucleus is surrounded by a pair of membranes called the nuclear envelope, which can be continuous in places with the membranes of the endoplasmic reticulum. The ...
Nucleolus. References. Typically, the nucleus is the most prominent organelle in a cell. The nucleus (plural = nuclei) houses the cell’s DNA in the form of chromatin and directs the synthesis of ribosomes and proteins. Let us look at it in more detail ( Figure 5.8.1 5.8. 1 ).
the 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 team to promote sales in South America. physics. A nucleus is the central part of an atom. biology.
Feb 28, 2021 · The nucleolus is a condensed region of chromatin where ribosome synthesis occurs. The boundary of the nucleus is called the nuclear envelope. It consists of two phospholipid bilayers: an outer membrane and an inner membrane. The nuclear membrane is continuous with the endoplasmic reticulum.
Mar 13, 2019 · Nucleus: Definition, Structure & Function (with Diagram) •••. Updated March 13, 2019. By Kevin Beck. The cell is the fundamental organizational and functional component in living things, being the simplest natural construct that includes all of the properties assigned to life. Indeed, some organisms consist of only a single cell.
Oct 29, 2023 · The nucleus is a membrane bound organelle found in the majority of eukaryotic cells. It is the largest organelle of the eukaryotic cell, accounting for around 10% of its volume. It houses the genome, and through gene expression, it co-ordinates the activities of the cell. In this article, we will consider the structure and function of the nucleus.
