Bacteria - Wikipedia
Bacteria (/ b æ k ˈ t ɪər i ə / ; common noun bacteria, singular bacterium) are a type of biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals.
Bacteria: Definition, Types & Infections | Live Science
Bacteria are microscopic, single-celled organisms that thrive in diverse environments. These organisms can live in soil, the ocean and inside the human gut. Humans' relationship with bacteria is ...
bacteria | Cell, Evolution, & Classification | Britannica.com
Bacteria, singular bacterium, any of a group of microscopic single-celled organisms that live in enormous numbers in almost every environment on Earth, from deep-sea vents to deep below Earth’s surface to the digestive tracts of humans.. Bacteria lack a membrane-bound nucleus and other internal structures and are therefore ranked among the unicellular life-forms called prokaryotes.
Bacteria: What you need to know - medicalnewstoday.com
Bacteria are single-celled organisms that exist in their millions, in every environment, inside or outside other organisms. Some are harmful, but others support life. They play a crucial role in ...
Bacteria - definition of bacteria by The Free Dictionary
Define bacteria. bacteria synonyms, bacteria pronunciation, bacteria translation, English dictionary definition of bacteria. n. Plural of bacterium. pl n , sing -rium a very large group of microorganisms comprising one of the three domains of living organisms. They are...
Bacteria | Definition and Patient Education
Bacteria are single-celled, or simple, organisms. Though small, bacteria are powerful and complex, and they can survive in extreme conditions.
Introduction to the Bacteria - UCMP
Introduction to the Bacteria. 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, the actinomycetes, produce antibiotics such as streptomycin and nocardicin; others live symbiotically in the guts of animals (including humans) or elsewhere in their bodies, or on the roots of ...
Bacteria | Definition of Bacteria by Merriam-Webster
Bacteria definition is - bacterium —not usually used technically. How to use bacteria in a sentence. Did You Know? Is bacteria singular or plural?
Bacteria | Definition of Bacteria at Dictionary.com
Bacteria definition, ubiquitous one-celled organisms, spherical, spiral, or rod-shaped and appearing singly or in chains, comprising the Schizomycota, a phylum of the kingdom Monera (in some classification systems the plant class Schizomycetes), various species of which are involved in fermentation, putrefaction, infectious diseases, or nitrogen fixation.
H. pylori Bacteria Infection: Symptoms, Diagnosis ...
Helicobacter pylori (H. pylori) is a type of bacteria. These germs can enter your body and live in your digestive tract. After many years, they can cause sores, called ulcers, in the lining of ...