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  1. Cell (biology) - Wikipedia

    Cell (biology) ... The cell is the basic structural and functional unit of all forms of life or organisms. The term comes from the Latin word cellula meaning 'small room'. A biological cell basically consists of a …

  2. Cell | Definition, Types, Functions, Diagram, Division, Theory, & Facts ...

    Jun 18, 2026 · A cell, in biology, is the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell may be a complete …

  3. The Cell – Definition, Structure, Types, and Functions

    Jun 14, 2025 · Explore the structure, types, and functions of cells in this student-friendly guide to cell biology and cell theory.

  4. What Is a Cell? | Learn Science at Scitable - Nature

    Cell membranes are based on a framework of fat-based molecules called phospholipids, which physically prevent water-loving, or hydrophilic, substances from entering or escaping the cell.

  5. Cell - National Human Genome Research Institute

    3 days ago · A cell is the basic building block of living things. All cells can be sorted into one of two groups: eukaryotes and prokaryotes. A eukaryote has a nucleus and membrane-bound organelles, …

  6. Cell Biology - National Geographic Society

    A cell is the smallest unit that is typically considered alive and is a fundamental unit of life. All living organisms are composed of cells, from just one (unicellular) to many trillions (multicellular). Cell …

  7. Cell Structure & Function - SEER Training

    Cell Structure & Function Cells, the smallest structures capable of maintaining life and reproducing, compose all living things, from single-celled plants to multibillion-celled animals. The human body, …

  8. Intro to cells (article) | Khan Academy

    An introduction to cells, including the history of their discovery and the development of cell theory.

  9. What is a cell?: MedlinePlus Genetics

    Feb 22, 2021 · The nucleus serves as the cell’s command center, sending directions to the cell to grow, mature, divide, or die. It also houses DNA (deoxyribonucleic acid), the cell’s hereditary material. The …

  10. A primer on the components of human cells

    Aug 23, 2024 · An explanation and depiction of the components of cells, the basic building blocks of all living things that make up a human being.