biology definitions nucleus
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- By Regina Bailey. Definition: The nucleus is a membrane bound structure that contains the cell's hereditary information and controls the cell's growth and reproduction.It is commonly the most prominent organelle in the cell.The nucleus is surrounded by a structure called the nuclear envelope.This membrane separates the contents of the nucleus from the cytoplasm. The cell's chromosomes are also housed within the nucleus.he nucleus is surrounded by a structure called the nuclear envelope. This membrane separates the contents of the nucleus from the cytoplasm. The cell's chromosomes are also housed within the nucleus.
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nucleolus n. pl. nu·cle·o·li (-lī′). A small body in the nucleus of a cell that contains protein and RNA and is the site for the synthesis of ribosomal RNA and for the formation of ribosomal subunits.
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- The Cell Nucleus: 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.
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- The Cell Nucleus The nucleus is a highly specialized organelle that serves as the information processing and administrative center of the cell. This organelle has two major functions: it stores the cell's hereditary material, or DNA, and it coordinates the cell's activities, which include growth, intermediary metabolism, protein synthesis, and reproduction (cell division). Only the cells of advanced organisms, known as eukaryotes, have a nucleus. Generally there is only one nucleus per cell, but there are exceptions, such as the cells of slime molds and the Siphonales group of algae. Simpler one-celled organisms (prokaryotes), like the bacteria and cyanobacteria, don't have a nucleus.
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What does nuclei mean? (Biology))? Report Abuse. a nucleus (nucleii refers to more than one nucleus, it is the plural form of the word nucleus) is a core, the central and generally key or most important thing to the total structure. A nucleus, when discussing cells, is the area of the cell where genetic material resides. It has its own structural border (a semi-permeable wall separating it from the main cell mass). You must know what a cell nucleus is without needing further detail. It is a fairly basic term to cell biology.
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- The nucleus is a membrane bound structure that contains the cell's hereditary information and controls the cell's growth and reproduction. It is commonly the most prominent organelle in the cell.
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- Definition of NUCLEOLUS. : a spherical body of the nucleus of most eukaryotes that becomes enlarged during protein synthesis, is associated with a nucleolus organizer, and contains the DNA templates for ribosomal RNA — see cell illustration. a spherical body of the nucleus of most eukaryotes that becomes enlarged during protein synthesis, is associated with a nucleolus organizer, and contains the DNA templates for ribosomal RNA — see cell illustration.
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Cell nucleus A cell nucleus (plural: cell nuclei) is the part of the cell which contains the genetic code, the DNA. The nucleus is small and round, and it works as the cell's control center. It contains chromosomes which house the DNA. The human body contains billions of cells, most of which have a nucleus. All eukaryote organisms have nuclei in their cells, even the many eukaryotes that are single-celled.
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- The Cell Nucleus: 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.istinguishing Characteristics: 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.
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- Generically a nucleus is the center of something; a part around which other parts are gathered or grouped; a core: The word can also have specialist specific meanings here are two common examples. Biology-The nucleus of a cell is a membrane-bound organelle that contains most of the cell's genetic material.ucleus of the Cell Think of it as the Control Center or Headquarters of the cell. The nucleus of the cell contains much of the DNA of the cell, and it regulates the act … ivities of that cell, whatever those activities are.
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- Abstract. The cell nucleus is a double membrane‐bound organelle that contains the genetic information of the cell packaged in the form of chromatin.The nucleus is a characteristic feature of most eukaryotic cells.bstract. The cell nucleus is a double membrane‐bound organelle that contains the genetic information of the cell packaged in the form of chromatin.
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Cell nucleus In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells.Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many.he nucleolus is a discrete densely stained structure found in the nucleus. It is not surrounded by a membrane, and is sometimes called a suborganelle. It forms around tandem repeats of rDNA, DNA coding for ribosomal RNA (rRNA). These regions are called nucleolar organizer regions (NOR).
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The Cell Nucleus The Cell Nucleus: 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.Distinguishing Characteristics:he Nucleolus: Contained within the nucleus is a dense structure composed of RNA and proteins called the nucleolus. The nucleolus contains nucleolar organizers, which are parts of chromosomes with the genes for ribosome synthesis on them.
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nucleus 3. Biology A membrane-bound organelle within a eukaryotic cell that contains most of the cell's genetic material. DNA transcription takes place in the nucleus. 4. Anatomy A group of specialized nerve cells or a localized mass of gray matter in the brain or spinal cord. 5.
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Cell nucleus In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel or seed) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types, such as mammalian red blood cells, have no nuclei, and a few others have many.
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The Nucleus The Nucleus. The nucleus is the cell's control center-that is, it contains the genetic information to do and make everything that goes on within a cell.he nucleus is surrounded by a nuclear envelope, which is a double membrane that protects the nucleus by filtering what can leave and enter (like the cell membrane), and separates the nucleus from the rest of the cell.
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Nucleus (cell biology) The large, membrane-bounded organelle that contains the genetic material, in the form of multiple linear DNA molecules organized into structures called chromosomes. (botany) The central kernel of a nut or seed, or the center of a starch granule.
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Nucleus The word nucleus is derived from a Latin word nucleus or nuculeus which means 'kernel'. Nucleus a double-membrane bound cell organelle present in eukaryotic cells. The nucleus constitutes most of the genetic material of the cell-the DNA.The nucleus maintains the integrity of the genes which regulate the gene expression, in-turn regulating the activities of the cell.lant cell nucleus is a double-membrane bound organelle. It controls the activities of the cell and is known as the master mind or the control center of the cell. The plant cell wall has two layers-the outer membrane and the inner membrane, which encloses a tiny space known as perinuclear space.
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The Cell Nucleus The Cell Nucleus: 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.Distinguishing Characteristics:ike the cell membrane, the nuclear envelope consists of phospholipids that form a lipid bilayer. The envelope helps to maintain the shape of the nucleus and assists in regulating the flow of molecules into and out of the nucleus through nuclear pores. Chromosomes are located within the nucleus.
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- Nucleus can either refer to a part of an atom, or a part of a cell. In biology, the nucleus is the information center of a eukaryotic cell, and contains DNA to instruct the cell's life processes.In an atom, the nucleus is the central body of protons and neutrons.n biology, the nucleus is the information center of a eukaryotic cell, and contains DNA to instruct the cell's life processes. In an atom, the nucleus is the central body of protons and neutrons.
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Nucleus Animal cell nucleus is a membrane bound organelle. It is surrounded by double membrane. The nucleus communicates with the surrounding cell cytoplasm through the nuclear pores. The DNA in the nucleus is responsible for the hereditary characteristics and protein synthesis.ucleus a double-membrane bound cell organelle present in eukaryotic cells. The nucleus constitutes most of the genetic material of the cell-the DNA. The nucleus maintains the integrity of the genes which regulate the gene expression, in-turn regulating the activities of the cell.
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What Is Forgery In California? â California Penal Code Section 470 Forgery in California pertains to a wide variety of crimes. Forgery can mean false checks, it can mean writing a will without authorization, and even filing false insurance claims. Under California Penal Code section 470, the idea behind all instances of forgery involves three elements: (1) You intended to defraud someone.
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Lesson 4-02 Prokaryotes and Eukaryotes Cells fall into two broad categories, depending on whether they contain a nucleus. The nucleus (plural: nuclei) is a large membrane-enclosed structure that contains the cell's genetic material in the form of DNA. The nucleus controls many of the cell's activities.Eukaryotes (yoo-KAR-ee-ohts) are cells that contain nuclei.Prokaryotes (pro-KAR-ee-ohts) are cells that do not contain nuclei.ells fall into two broad categories, depending on whether they contain a nucleus. The nucleus (plural: nuclei) is a large membrane-enclosed structure that contains the cell's genetic material in the form of DNA. The nucleus controls many of the cell's activities.
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nucleolus nucleolus. n, pl-li (-laɪ). 1. (Biology) a small rounded body within a resting nucleus that contains RNA and proteins and is involved in the production of ribosomes.
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- The nucleus is the part of the cell, or organelle, that contains the genetic material and controls the cell's movement. It consists of the genetic material, the nucleoleus, an … d the nuclear membrane.Nucleus-the nucleus controls all of the cells activities, including how the cell grows,develops,and divides.10 people found this useful.t consists of the genetic material, the nucleoleus, an … d the nuclear membrane. Nucleus-the nucleus controls all of the cells activities, including how the cell grows,develops,and divides. 10 people found this useful.
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- The nucleus is a membrane bound structure that contains the cell's hereditary information and controls the cell's growth and reproduction.It is commonly the most prominent organelle in the cell. The nucleus is surrounded by a structure called the nuclear envelope.he nucleus is a membrane bound structure that contains the cell's hereditary information and controls the cell's growth and reproduction.