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Created page with "== Overview == Eukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope. This is in contrast to the Prokaryotes, which lack a nucleus. Eukaryotes represent a tiny minority of all living things. However, due to their generally much larger size, their collective worldwide biomass is estimated to be about equal to that of prokaryotes. Eukaryotes are a highly diverse group, and their cell structures are likewise highly variable. The feat..."