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ShareBacteria (singular: bacterium) are a major group of living organisms.
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Most are microscopic and unicellular, with a relatively simple cell structure lacking a cell nucleus, and organelles such as mitochondria and chloroplasts.Bacteria are the most abundant of all organisms.
Many pathogens, disease-causing organisms, are bacteria.
For more information about the topic Bacteria, read the full article at Wikipedia.org, or see the following related articles:
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Escherichia coli — Escherichia coli, usually abbreviated to E. coli, is one of the main species of bacteria that live in the lower intestines of warm-blooded animals, ... > read more
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Pathogen — A pathogen or infectious agent is a biological agent that causes disease or illness to its host. The term is most often used for agents that disrupt ... > read more
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Protozoa — Protozoa are single-celled eukaryotes (organisms whose cells have nuclei) that commonly show characteristics usually associated with animals, most ... > read more
Bacterial meningitis — Bacterial meningitis is a condition in which the dural layers lining the brain (the meninges) have become inflamed. The classic symptoms of bacterial ... > read more
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Bacteria at Wikipedia.org. See the Wikipedia copyright page for more details.
Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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