What is the name of the group of single-celled organisms?
Q: What is the name of the group of single-celled organisms?
A: The group of single-celled organisms is called Archaea.
Q: Where does the name come from?
A: The name comes from Greek αρχαία, which means "old ones".
Q: Are Archaea prokaryotes or eukaryotes?
A: Archaea are prokaryotes, meaning they do not have nuclei and cell organelles of the eukaryote type.
Q: In what kind of environments were they originally discovered?
A: They were originally discovered in extreme environments (extremophiles).
Q: Are Archaea now thought to be common to more average conditions?
A: Yes, they are now thought to be common to more average conditions.
Q: What kind of temperatures can some Archaea survive at?
A: Some can survive at very high (over 80°C) or very low temperatures, or highly salty, acidic or alkaline water.
Q: How are Archaea classified in the three-domain system?
A: In the three-domain system, Archaea are classified as a separate domain.
