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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 …

  2. 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 …

  3. 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, …

  4. Nucleus - National Human Genome Research Institute

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

  5. 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 …

  6. 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 …

  7. Nucleus - Definition and Examples - Biology Online Dictionary

    Sep 1, 2023 · A nucleus is a large double-membraned organelle that is sometimes referred to as the “central unit ” of the cell because it contains the chromosomes that bear the genetic material.

  8. 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 …

  9. Nucleus | Biology for Majors I - Lumen Learning

    Typically, the nucleus is the most prominent organelle in a cell. The nucleus (plural = nuclei) houses the cell’s DNA and directs the synthesis of ribosomes and proteins.

  10. 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.