
Nucleus | Definition, Function, Structure, & Facts | Britannica
Nov 18, 2025 · 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 – 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 …
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 …
What Is the Nucleus and What Does It Do? - ScienceInsights
Nov 20, 2025 · The nucleus is a defining, membrane-bound compartment found within eukaryotic cells (animals, plants, fungi, and protists). It serves as the cell’s central command center, regulating all …
Nucleus - National Human Genome Research Institute
3 days ago · A nucleus, as related to genomics, is the membrane-enclosed organelle within a cell that contains the chromosomes. An array of holes, or pores, in the nuclear membrane allows for the …
What is a Nucleus? - BYJU'S
What is the nucleus? 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 …
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: 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: Control Center of the Cell - sciencenewstoday.org
Aug 3, 2025 · The nucleus is a defining feature of eukaryotic cells—those with complex internal structures, such as plants, animals, fungi, and protists. Prokaryotic cells, like bacteria and archaea, …
Nucleus: Function, Structure, and Role in the Cell
Jun 27, 2025 · The nucleus is a large organelle in eukaryotic cells, including those of plants, animals, and fungi. As the cell’s control center, it houses the genetic material containing instructions for …