英语翻译
InsidetheLivingCell:StructureandFunctionofinternalcellParts.
1.cytoplasm:thedynamic,Mobilfactory
Mostofthepropertiesweassociatewithlifearepropertiesofthecytoplasm.Muchofthemassofacellconsistofthissemifluidsubstance,withisboundedontheoutsidebytheplasmamembrane.Organellesaresuspendedwithinit,supportedbythefilamentousnetworkofthecytoskeleton.dissolvedinthecytoplasmicfluidarenutrients,ions,solubleproteins,andothermaterialsneededforcellfunctioning.
2.TheNucleus:informationcentral
Theeukaryoticcellsnucleusisthelargestogranelleandhousesthegeneticmaterial(DNA)onchromosomes.(Inprokaryotesthehereditarymaterialisfoundinthenuncleoid.)thenucleusalsocontainsoneortwoorganelles-thenucleoli-thatplayaroleincelldivision.Apore-perforatedsaccalledthenuclearenvelopeseparatesthenucleusanditscontentsfromthecytoplasm.Smallmoleculescanpassthroughthenuclearenvelope,butlagermoleculessuchasmRNAandribosomesmustenterandexiaviathepores.