Prokaryotesandeukaryotesarethetwomaintypesofcellsthatmakeupalllivingorganisms.Prokaryotesaresimple,single-celledorganismswithoutanucleusormembrane-boundorganelles.Theirgeneticmaterialfloatsfreelyinthecytoplasm.Examplesincludebacteriaandarchaea.Theyreproducequicklythroughbinaryfissionandarefoundindiverseenvironments,fromsoiltoextremeconditionslikehotsprings.Eukaryotesaremorecomplex,withanucleusenclosedbyamembraneandspecializedorganelleslikemitochondriaandtheGolgiapparatus.Theycanbesingle-celled(e.g.,amoebas)ormulticellular(e.g.,plants,animals,fungi).Eukaryoticcellsarelargerandhavemorecomplexstructures,enablingadvancedfunctionsliketissueformationandsexualreproduction.Themaindifferencesbetweenthemarethepresenceofanucleus,membrane-boundorganelles,andoverallcomplexity.Prokaryotesareolderinevolutionaryterms,whileeukaryotesevolvedlater,possiblyfromprokaryoticancestors.
