Compléter Life Science ReviewVersion en ligne This activity serves as a practice with recognizing key vocabulary. par Katrina Johnson 1 Bacteria Eukaryotic prokaryotic nucleus unicellular Eukarya Archaea Organisms that have only one cell are called . cells have a nucleus and other membrane - bound organelles . The temperature in hot springs is over the temperature of 110 degrees celsius . Organisms in domain can survive in this environment . Cells that do not contain a nucleus are . Domain organisms can be unicellular and multicellular . All cells contain a . Organisms in this domain can be found in the air , on our skin , and in many other places . These organisms belong in domain .