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Organelle
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Labeled diagram of a Euglena, a unicellular protist, showing internal structures such as the nucleus, nucleolus, mitochondrion, chloroplasts, stigma (eyespot), flagellum, contractile vacuole, photoreceptor, stored carbohydrate, endoplasmic reticulum, and Golgi apparatus. Animal cell Cutaway illustration of a plant cell showing labeled internal structures including the nucleus, nucleolus, chloroplast, mitochondrion, vacuole, endoplasmic reticulum, ribosomes, Golgi apparatus, cell wall, and other key organelles.
How different parts of a cell interact
Eukaryotic vs. Prokaryotic Cells: Key Differences Explained
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greylag. Flock of Greylag geese during their winter migration at Bosque del Apache National Refugee, New Mexico. greylag goose (Anser anser)
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Mechanism of cellular autophagy, illustration for Nobel Prize Award in Medicine 2016. 3D illustration showing fusion of lysosome with autophagosome containing microbes and molecules.
Parts of a Cell Quiz

Organelle: References & Edit History

Article Contributors

Primary Contributors

  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Information added about membrane-bound and nonmembrane-bound organelles. Sep 10, 2026
Mentioned additional organelles. Added an interactive. Jun 10, 2025
Modified title of Web site: Biology LibreTexts - Organelles. May 02, 2025
Add new Web site: CellPress - Organelle Inheritance. Mar 07, 2025
Add new Web site: Frontiers - Frontiers in Cell and Developmental Biology - The different facets of organelle interplay�an overview of organelle interactions. Nov 25, 2024
Add new Web site: National Center for Biotechnology Information - Theory of Organelle Biogenesis: A Historical Perspective. Oct 17, 2024
Add new Web site: Demo Pressbooks Network - Boundless Anatomy and Physiology - Organelles. Aug 10, 2024
Add new Web site: Thompson Rivers University - Cell Organelles. Dec 18, 2023
Add new Web site: Biology LibreTexts - Organelles. Oct 24, 2023
Add new Web site: Khan Academy - Cellular organelles and structure. Jun 05, 2023
Media added. Nov 17, 2017
Add new Web site: ISCID Encyclopedia of Science and Philosophy - Organelle. Nov 12, 2010
Add new Web site: Buzzle.com - Organelles and Their Functions. Nov 12, 2010
New article added. Feb 06, 2009
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