
Nucleus | Definition, Function, Structure, & Facts | Britannica
Jan 5, 2026 · 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.
Cell nucleus - Wikipedia
The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expression. Because the nuclear envelope is impermeable to large molecules, nuclear pores are …
Cell Nucleus - Definition, Structure, Function
Oct 8, 2024 · The nucleus is a large, membrane-bound organelle in eukaryotic cells that contains the cell’s genetic material in the form of DNA. Its primary role is to regulate gene expression, mediate …
Nucleus: Definition, Structure, Parts, Functions, Diagram
Oct 31, 2023 · The nucleus is the organelle that houses chromosomes. Chromosomes consist of DNA, which contains heredity information and instructions for cell growth, development, and reproduction.
The Nucleus - Definition, Structure, and Function - ThoughtCo
May 8, 2025 · The cell nucleus is a membrane-bound structure that contains a cell's hereditary information and controls its growth and reproduction. It is the command center of a eukaryotic cell …
Nucleus - National Human Genome Research Institute
1 day ago · The nucleus is one of the most obvious parts of the cell when you look at a picture of the cell. It's in the middle of the cell, and the nucleus contains all of the cell's chromosomes, which …
What is a Nucleus? - BYJU'S
The nucleus is a double-membraned organelle that contains the genetic material and other instructions required for cellular processes. It is exclusively found in eukaryotic cells and is also one of the largest …
Nucleus - Definition and Examples - Biology Online Dictionary
Sep 1, 2023 · In cell biology, the nucleus is the large, membrane-bounded organelle that contains the genetic material in the form of multiple linear DNA molecules organized into structures called …
Molecular Expressions Cell Biology: The Cell Nucleus
Nov 13, 2015 · The nucleus is a highly specialized organelle that serves as the information and administrative center of the cell.
Nucleus - Definition, Structure & Function, Cellular vs Atomic Nuclei
The nucleus is a membrane-bound organelle that contains genetic material (DNA) of eukaryotic organisms.