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Cell nucleus - Wikipedia
The eukaryotic cell nucleus. Visible in this diagram are the ribosome-studded double membranes of the nuclear envelope, the DNA (complexed as chromatin), and the nucleolus. Within the cell nucleus is a viscous liquid called nucleoplasm, similar to the cytoplasm found outside the nucleus.
nucleus | Definition, Function, Structure, & Facts ...
Nucleus: 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.
Nucleus | Definition of Nucleus at Dictionary.com
The nucleus also contains at least one spherical nucleolus, which mainly contains RNA and proteins and directs the construction of the cell's ribosomes. See more at cell. The solid central part of a comet, typically several kilometers in diameter and composed of ice, frozen gases, and embedded chunks of rock and dust. It is the permanent part ...
The Nucleus - Definition, Structure, and Function
The nucleus regulates the synthesis of proteins in the cytoplasm through the use of messenger RNA (mRNA). Messenger RNA is a transcribed DNA segment that serves as a template for protein production. It is produced in the nucleus and travels to the cytoplasm through the nuclear pores of the nuclear envelope.
Nucleus | Definition of Nucleus by Merriam-Webster
The Renegades graduated a strong senior class but still return a strong nucleus. — Chris Melchiorre, Philly.com, "South Jersey Preseason Lacrosse Top 10s," 2 Apr. 2018 Progeria is caused by a mutation in a gene that regulates production of a protein that helps shape and support the nucleus of cells throughout the body.
Nucleus | definition of nucleus by Medical dictionary
nucleus [noo´kle-us] (pl. nu´clei) (L.) 1. cell nucleus; a spheroid body within a cell, contained in a double membrane, the nuclear envelope, and containing the chromosomes and one or more nucleoli. The contents are collectively referred to as nucleoplasm. The chromosomes contain deoxyribonucleic acid (DNA), which is the genetic material that codes ...