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Bacteria
Bacteria are single-celled, or simple, organisms. Though small, bacteria are powerful and complex, and they can survive in extreme conditions. More »
Source: healthline.com

Bacteria - Wikipedia

en.wikipedia.org/wiki/Bacteria

Bacteria constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from ...

Bacteria: Definition, Types & Infections - Live Science

www.livescience.com/51641-bacteria.html

Jul 23, 2015 ... Bacteria are microscopic single-celled organisms that can be helpful, such as those that live in our guts, or harmful, such as flesh-eating ...

Bacteria - MicrobeWorld

www.microbeworld.org/types-of-microbes/bacteria

Bacteria consist of only a single cell, but don't let their small size and seeming simplicity fool you. They're an amazingly complex and fascinating group of ...

What Is Bacteria? What Are Bacteria? - Medical News Today

www.medicalnewstoday.com/articles/157973.php

Jan 11, 2016 ... The word bacteria is the plural of bacterium. Grammatically the headline should just say "What are bacteria?" The incorrect usage has been ...

Introduction to the Bacteria

www.ucmp.berkeley.edu/bacteria/bacteria.html

Bacteria are often maligned as the causes of human and animal disease (like this one, Leptospira, which causes serious disease in livestock). However, certain ...

bacteria - Dictionary Definition : Vocabulary.com

www.vocabulary.com/dictionary/bacteria

Bacteria are microscopic living organisms, usually one-celled, that can be found everywhere. They can be dangerous, such as when they cause infection, ...

Bacterial vs. Viral Infections: Causes and Treatments - WebMD

www.webmd.com/a-to-z-guides/bacterial-and-viral-infections

Apr 10, 2015 ... Bacterial and viral infections have many things in common. Both types of infections are caused by microbes -- bacteria and viruses, respectively ...

bacteria | Britannica.com

www.britannica.com/science/bacteria

Aug 31, 2015 ... Bacteria, singular bacterium, any of a group of microscopic single-celled organisms that live in enormous numbers in almost every environment ...

Definition of Bacteria - MedicineNet

www.medicinenet.com/script/main/art.asp?articlekey=13954

Bacteria: Single-celled microorganisms that can exist either as independent (free -living) organisms or as parasites (dependent on another organism for life).