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  1. Nucleus | Definition, Function, Structure, & Facts | Britannica

    Oct 9, 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 …

  2. 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, …

  3. 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 …

  4. 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 …

  5. Nucleus - National Human Genome Research Institute

    6 days 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, …

  6. Nucleus: Structure and Function - GeeksforGeeks

    Jul 23, 2025 · The nucleus is a double membrane-bound organelle that contains the cell's genetic material in the form of DNA, which is organized into structures called chromosomes.

  7. 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.

  8. Nucleus Structure and Function: The Control Center of the Cell

    May 29, 2025 · This article explores the nucleus through a detailed diagram, showcasing its key components such as the nuclear envelope, chromatin, nucleolus, and nuclear pores.

  9. 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 …

  10. Cell Nucleus (Plant & Animal) - Definition and Function | Biology

    Oct 4, 2019 · The cell nucleus is a large organelle in eukaryotic organisms which protects the majority of the DNA within each cell. The nucleus also produces the necessary precursors for …