A eukaryote is any cell or organism that possesses a clearly defined nucleus. Eukaryotic cells form the foundation of complex, multicellular life, including apple trees, mushrooms, fish and humans.

the mere presence of a nucleus is considered one of the defining features of a eukaryotic cell. This structure is so important because it is the site at which the cell's DNA is housed and the ...

Planctomycetes Are Important for Theories of the Origin of Eukaryotes and Their ... into the Eukaryote-Like Cell Biology of a Bacterium Planctomycete cell structure differs from that of all ...