The bacteria ([bækˈtɪəriə] (help · info); singular: bacterium are a large group of single-celled, prokaryote microorganisms. Typically a few micrometres in length ...

bacteria ( bak′tirēə ) ( microbiology ) Extremely small, relatively simple prokaryotic microorganisms traditionally classified with the fungi as

Topics include morphology, systematics, life history and ecology, and the fossil record.

What are Bacteria? Bacteria are microscopic organisms whose single cells have neither a membrane-bounded nucleus nor other membrane-bounded organelles like mitochondria and ...

Get information, facts, and pictures about bacteria at Encyclopedia.com. Make research projects and school reports about bacteria easy with credible articles from our FREE ...

LiveScience.com explains bacteria,types of bacteria,bacteria microscopic pictures,bacteria structure and pictures of bacteria

Bacteria: Life History and Ecology. Bacteria grow in a wide variety of habitats and conditions. When most people think of bacteria, they think of disease-causing organisms, like the ...

bacteria [pl. of bacterium], microscopic unicellular prokaryotic organisms characterized by the lack of a membrane-bound nucleus and membrane-bound organelles.

bac·te·ri·a (b k-tîr-) n. Plural of bacterium. bacteria [bækˈtɪərɪə] pl n sing-rium [-rɪəm] (Life Sciences & Allied Applications / Microbiology) a very large group of ...

bacteria, The bacterial cell, Britannica Online Encyclopedia, All living organisms on Earth are made up of one of two basic types of cells: eukaryotic cells, in which the genetic ...