Final answer:
Eukaryotic cells are found in animals, plants, fungi, and protists, but not in bacteria, which are prokaryotic. Bacteria lack a defined nucleus and membrane-bound organelles.
Step-by-step explanation:
Eukaryotic cells are the type of cells that define the biological complexity and diversity of animals, plants, fungi, and protists. All these organisms have cells with a well-defined nucleus and various membrane-bound organelles, which include the endoplasmic reticulum, Golgi apparatus, lysosomes, and mitochondria. The presence of these complex structures differentiates eukaryotic cells from prokaryotic cells, which lack a defined nucleus and these specialized organelles.
Answering the student's question directly, eukaryotic cells can be found in all of the following organisms EXCEPT bacteria. Bacteria belong to the domain Bacteria, which along with the domain Archaea, comprises prokaryotic cells. These cells are simpler in structure and do not contain a nucleus or membrane-bound organelles.
Eukaryotic cells can be found in all organisms except bacteria. Eukaryotes are organisms that have cells with a well-defined nucleus and cell organelles. They include animals, plants, and fungi. Bacteria, on the other hand, are prokaryotes and do not have a nucleus or organelles.