Final answer:
The domain that includes organisms with a nucleus, a cell membrane, and mitochondria is Eukarya. Eukarya consists of all eukaryotes, including protists, fungi, plants, and animals.
Step-by-step explanation:
The domain that includes organisms with a nucleus, a cell membrane, and mitochondria is Eukarya. This domain consists of all eukaryotes, including uni- or multicellular eukaryotes such as protists, fungi, plants, and animals. The major defining characteristic of eukaryotes is that their cells contain a nucleus. of all eukaryotes,