• Archaea are prokaryotes, but they differ from bacteria in their DNA and biochemistry.
  • Most archaea are chemotrophs and derive their energy and nutrients from breaking down molecules in their environment.
  • Unlike bacteria, which can be parasites, there are no known archaea that act as parasites.
  • Archaea reproduce asexually through binary fission, fragmentation, or budding.
  • Some archaea form mutualistic relationships with their host, where both the archaea and the host benefit.
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