The organism can be classified into the domain Archaea.
The scientist isolated a single celled organism from the bottom of a sulfur hot spring and when examined under the microscope, the cell was very small and had no nucleus. Â Archaea are the organisms which live in extreme conditions and are called the extremophiles. They can tolerate high temperatures and survive in hot springs, anaerobic conditions and are acid-tolerant. The cells are very small and are similar to bacteria in lacking a nucleus and membrane bound organelles. The cell membrane is bound by a cell wall. They reproduce by binary fission, fragmentation or budding.
