Eukaryotic organisms are quite diverse and include the single-celled yeast, the large elephant, and the gigantic, underground fungus that spans several hundred to several thousand acres of land. It is incredible that these rather diverse organisms are genetically similar enough to be grouped into the Domain Eukarya, which consists of the four kingdoms of Animalia, Fungi, Plantae, and Protista.
Eukaryotic and Prokaryotic Cells
One of the major classifications of all organisms is determined by the differences between eukaryotic and prokaryotic cells. Eukaryotic cells have a cell nucleus that contains organized, genetic material. Prokaryotic cells do not have a cell nucleus, but have genetic material that is clumped together and freely floating in the cytoplasm.
