Domain Archaea
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16 Terms
Q: What does “Archaea” mean?
A: Primitive
Q: Approximately how long ago did archaea evolve?
A: About 3.5 billion years ago
Q: What type of environments do many archaea live in?
A: Very harsh environments
Q: What does anaerobic mean?
A: Living without oxygen
Q: What do methanogens produce?
A: Methane
Q: Where do methanogens commonly live?
A: Marshes and intestines
Q: Approximately how many methanogen species have been identified?
A: About 150 species
Q: What are extreme thermophiles adapted to?
A: Extremely hot temperatures
Q: Where do extreme thermophiles commonly live?
A: Hot springs and near volcanoes
Q: What does “halophile” mean?
A: Salt-loving
Q: What environments do extreme halophiles live in?
A: Very salty waters
Q: Which type of archaea would most likely live near an underwater volcano?
A: Extreme thermophiles
Q: Which type of archaea would most likely be found in the human digestive system?
A: Methanogens
Q: Which type of archaea would most likely survive in the Dead Sea?
A: Extreme halophiles
Q: What do archaea and bacteria have in common?
A: They are both microscopic single-celled organisms
Q: What is one difference between archaea and bacteria?
A: Their cell wall structures are different