Articles
The Archaea
Archaea are microscopic, single-celled organisms. Being prokaryotes they have no membrane-bound organelles within their cells as you and I do, this means no nucleus, no mitochondria, no chloroplasts, etc. Read more
Unknown. "The Archaea" [Online] Available http://www.earthlife.net/prokaryotes/archaea.html, February 27, 2005.
Archaea
These organisms are microscopic prokaryotes. When the first ones were discovered (in 1977), they were considered bacteria. Read more
J Kimball. "Archaea" [Online] Available
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/A/Archaea.html, March 17, 2004.
The Three Domains
Until the 19th century living organisms were divided into the kingdoms Animalia and Plantae. However, scientists began to discover that, due to the vast differences of all living things, the two kingdoms were insufficient to describe all life. Read more
Unknown. "The Three Domains" [Online] Available
http://www.ucmp.berkeley.edu/archaea/archaea.html, March 31, 2005