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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

    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.

  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, mediate …

  4. Nucleus - National Human Genome Research Institute

    19 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 reproduction.

  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 cell …

  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 eukaryotic cells and is …

  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.