Aunicellular, prokaryotic organism is discovered by scientists. are these characteristics enough to place it in a domain, or is more information needed? more information is needed because it could be a member of bacteria or archaea. more information is needed because it could be a member of eukarya or archaea. these characteristics are enough because it can be determined to be a member of bacteria. these characteristics are enough because it can be determined to be a member of eukarya.