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  1. 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 …

  2. 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.

  3. 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 …

  4. Nucleus - National Human Genome Research Institute

    2 days ago · A nucleus is a membrane-bound organelle that contains the cell's chromosomes.

  5. 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 …

  6. 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.

  7. What Is the Nucleus? Key Components and Functions

    Aug 19, 2025 · The nucleus is a central organelle within many living cells, often likened to the cell’s control center. It plays a central role by housing the genetic material that directs all cellular activities. …

  8. 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, …

  9. Molecular Expressions Cell Biology: The Cell Nucleus

    Nov 13, 2015 · The nucleus is a highly specialized organelle that serves as the information processing and administrative center of the cell.

  10. Nucleus - Structure - Function - TeachMePhysiology

    Oct 29, 2023 · In this article, we will consider the structure and function of the nucleus. Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. …