Image of blue archaea-bacteria
Glossary

Archaea

« Back to Glossary Index

Microbes that look similar to bacteria but are actually more closely related to eukaryotes, such as humans. Archaea are single-celled organisms that don’t have a nucleus and can only be seen with a microscope. They’re found in many different habitats, and many of the first known examples were found in extreme environments.

« Back to Glossary Index