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Nucleus definition, a central part about which other parts are grouped or gathered core A few faithful friends formed the nucleus of the club. See more..English Language Learners Definition of nucleus. biology the central part of most cells that contains genetic material and is enclosed in a membrane. physics the central part of an atom that is made up of protons and neutrons. a central or most important part of something..A nucleus is often called the brain, or control center, of a eukaryotic cell that is, a cell with a nucleus ..Updated . The cell nucleus is a membrane bound structure that contains the cell s hereditary information and controls the cell s growth and reproduction. It is the command center of a eukaryotic cell and is commonly the most prominent organelle in a cell..Definition. noun In cell biology, the nucleus is an organelle dubbed as the central The nucleus is the largest organelle in animal cells..Nucleus meaning . the central part of an atom, usually made up of protons and neutrons. the part of a cell that controls its growth . the group of people or .Nucleus definition The nucleus of an atom or cell is the central part of it. | Meaning, pronunciation, translations and examples..Nuclei from Latin nucleus or nuculeus, meaning kernel or seed is a membrane enclosed organelle found in eukaryotic cells. The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expressionthe nucleus is, therefore, the control center of the cell..
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 membranes of the nuclear envelope have interconnected pores that allow the exchange of substances with the cell’s cytoplasm..Medical Definition of nucleus . a cellular organelle of eukaryotes that is essential to cell functions as reproduction and protein synthesis , is composed of nuclear sap and a nucleoprotein rich network from which chromosomes and nucleoli arise, and is enclosed in a definite membrane..A nucleus surrounded by a membrane is found in almost all the cells of eukaryotes and thus sets them apart from the cells of prokaryotes, such as bacteria, which do not contain nuclei. See more at cell ..A nucleus is often called the brain, or control center, of a eukaryotic cell that is, a cell with a nucleus . The noun nucleus has several senses, though most of them will appear in science. If a biology teacher says nucleus , she is probably talking about a cell or a group of cells , but a physics teacher would be talking about the center of .The cell nucleus is bound by a double membrane called the nuclear envelope. This membrane separates the contents of the nucleus from the cytoplasm . Like the cell membrane , the nuclear envelope consists of phospholipids that form a lipid bilayer..Related WordsSynonymsLegend Switch to new thesaurus Noun . cell nucleus a part of the cell containing DNA and RNA and responsible for growth and reproduction karyon, nucleus cell biology the basic structural and functional unit of all organisms they may exist as independent units of life as in monads or may form colonies or tissues as in .The nucleus is the organelle responsible in maintaining the integrity of DNA and in controlling cellular activities such as metabolism, growth, and reproduction by regulating gene expression. The nucleus has three main components the nucleolus , the chromatin and the nuclear envelope ..Types of Nucleus. The word ‘nucleus’ can refer to the center of an atom or the control center of a cell. This lesson will discuss the nucleus of a cell. You have over different types of cells in your body. Some can be really thin and long, like a nerve cell that runs all the way from your spinal cord to your foot..