Students observe a jar of pond water and predict how much life they think exists in the jar and watch a "Bill Nye: The Science Guy" video regarding protists. They participate in an online virtual pond dip where they begin to familiarize...

Learners examine the three domains of life and explain that all living things share a common ancestor.  In this paleontology lesson students are introduced to the process of illustrating evolutionary relationships. 

A three-page quiz assessing budding biologists' understanding of classification. Middle-level learners may need a little additional time on this, but should be able to handle the concepts with ease.

In this science learning exercise, students look for the words that are related to the concept of zoology that is reviewed in the sheet. They also acquire new vocabulary.

Different groups of prokaryotes. Evolutionary relationships of bacteria and archaea. Extremophiles.

In this online biology textbook, learn about the two prokaryotic domains of life, which include eubacteria and acrhaebacteria.

Berkley offers an introduction to archaebacteria--ancient bacteria--including the history of the topic, scientific findings, and where to find archaeans. Includes images and links.

[Free Registration/Login may be required to access all resource tools.] For many years, archaea were classified as bacteria. Like the bacteria, archaea lacked a nucleus and membrane-bound organelles and, therefore, were prokaryotic...

Learn how prokaryotes reproduce by binary fission, and find out the use of E. coli bacteria in molecular biology.

This tutorial gives an overview of prokaryotes (bacteria and archaea) along with an explanation of structural features of prokaryotic cells.

Article describing some of the extreme environments where extremophile organisms can live, and giving examples from bacteria, archaea, flora, and fauna. (Published: November 26, 2010)

[Free Registration/Login may be required to access all resource tools.] Students will understand where bacteria live, the different types of prokaryotes, and extremephilic bacteria.

The Tree of Life is a multi-authored, Internet distributed project containing information about phylogeny and biodiversity. The Tree of Life can be used to locate information about a particular group of organisms through their taxonomy.

Learn about different forms of life that coexist with us on Earth. This Berkeley article provides links to brief write-ups on the three domains of living organisms: Eukaryota, Bacteria, and Archaea.

[Free Registration/Login may be required to access all resource tools.] Overview of classifying prokaryotes and prokaryotic domains.

Between 1866 and 1977, a total of four new kingdoms were added to the original plant and animal kingdoms identified by Linnaeus. The new kingdoms include Protista (protists), Fungi, Monera (eubacteria), and Archaea (archaebacteria)....

Explains what archaebacteria are, the different phyla, and the characteristics of archaebacteria.

Explains what archaebacteria and eubacteria are and presents a chart showing how they differ in structure and characteristics.

[Free Registration/Login may be required to access all resource tools.] Humans are in the same domain as trees and algae. What could they possibly have in common? It is the location of their DNA inside their cells. Their cells all have a...

Describes the characteristics of Archaea, Bacteria, and Eukarya, the three domains of life.

Learn about cooperation and "multicellularity" in prokaryotes including mutualisms, commensalisms, parasitisms. Also find out the role of prokaryotes in the carbon and nitrogen cycles.

A complete learning module on microbial diversity that includes a downloadable textbook chapter, teacher guide, and lesson activities. The chapter can also be viewed online. In addition, there are animations, images, a video, and...

An interview with a microbiologist who studies bacteria that decompose hydrogen sulfide gas and other noxious chemicals. The interview focuses on her research and her career.

[Free Registration/Login may be required to access all resource tools.] We have all heard of viruses. The flu, the common cold, and many other diseases are caused by viruses. But what is a virus? Do you think viruses are living? Which...