Question Video: Describing the Environments in Which Eubacteria and Archaebacteria Are Typically Found Biology

Which of the following correctly describes the difference between the environments of Archaebacteria and Eubacteria? [A] Many species of Archaebacteria are extremophiles and live in extreme environments, whereas Eubacteria are found in all environments. [B] Many species of Eubacteria are extremophiles and live in extreme environments, whereas Archaebacteria are found in all environments.

02:13

Video Transcript

Which of the following correctly describes the difference between the environments of Archaebacteria and Eubacteria? (A) Many species of Archaebacteria are extremophiles and live in extreme environments, whereas Eubacteria are found in all environments. Or (B) many species of Eubacteria are extremophiles and live in extreme environments, whereas Archaebacteria are found in all environments.

Archaebacteria and Eubacteria are usually classified within the kingdom Monera. The word “Monera” comes from the Greek word meaning single or solitary, describing how all organisms in this kingdom are unicellular so only made up of a single cell. All organisms in this kingdom are also prokaryotic, which means that they do not contain a membrane-bound nucleus or other membrane-bound organelles.

Archaebacteria and Eubacteria are distinct in many ways, and perhaps the most notable difference is in the environments they commonly inhabit. Archaebacteria, which are also commonly called Archaea, are often referred to as “extremophiles,” which means that many species within this group inhabit extreme environments. These organisms can be found in intensely hot or cold habitats and chemical conditions that little other life could withstand like incredibly salty, acidic, or alkaline environments.

For example, some species of Archaebacteria are found within underwater hydrothermal vents, where temperatures can reach 90 degrees Celsius and above. Eubacteria, on the other hand, are relatively commonplace and found in all sorts of environments, including on the surface of the human body. While some species of Eubacteria are known for causing diseases, many are harmless, and some are even beneficial to human health.

Now that we know the environments each of these groups of organisms live in, we can figure out which option correctly describes the difference between the environments of Archaebacteria and Eubacteria. The correct answer is (A). Many species of Archaebacteria are extremophiles and live in extreme environments, whereas Eubacteria are found in all environments.

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.