Title: prokaryote Long Title: IUPAC Gold Book - prokaryote DOI: 10.1351/goldbook.16009 Status: current Definition Unicellular organism, characterized by the absence of a membrane-enclosed nucleus. Note Prokaryotes include bacteria, blue–green algae, and mycoplasmas. Source - PAC, 2007, 79, 1153. 'Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)' on page 1290 (https://doi.org/10.1351/pac200779071153) Other Outputs - html: https://goldbook.iupac.org/terms/view/16009/html - json: https://goldbook.iupac.org/terms/view/16009/json - xml: https://goldbook.iupac.org/terms/view/16009/xml Citation: Citation: 'prokaryote' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.16009 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. Accessed: 2026-04-17T23:54:32+00:00