What is a Eukaryotic Cell? Above: Scientists use microscpoes to observe cells. Eukaryotic cells are the type of living cells that form the organisms of all of the life kingdoms except monera. Protista, fungi, plants and animals are all composed of eukaryotic cells. What about living cells that are not eukaryotic ? Not all cells are eukaryotic. There are also prokaryotic cells. (see prokaryotic cell structure), such as the cells of blue-green algae and many different types of bacteria. Examples of eukaryotic cells include plant cells and animal cells, but not bacteria (which are prokaryotic cells).