During a dive to the bottom of the Pacific Ocean, biologists discover a new organism. The organism grows in colonies and is made up of cells that have nuclei and organelles. In which domain would you place this organism?

Eukarya
Archaea
Eubacteria
Plantae

Eukarya

Based on the characteristics provided, the organism belongs to the domain Eukarya. This domain includes organisms that have cells containing membrane-bound organelles, including a nucleus.