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- DictionaryBac·te·ri·um/bakˈtirēəm/
noun
- 1. a member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, including some that can cause disease.
The meaning of BACTERIA is bacterium. How to use bacteria in a sentence. Is bacteria singular or plural?: Usage Guide
noun. uk / bækˈtɪə.ri.ə / us / bækˈtɪr.i.ə / Add to word list. plural of bacterium. Examples. a colony of bacteria. There are many different types of bacteria. Some bacteria can only live in anaerobic conditions. Food must be heated to a high temperature to kill harmful bacteria. Many sorts of bacteria are resistant to penicillin.
Bacteria (/ b æ k ˈ t ɪər i ə / ⓘ; sg.: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats.
Jun 11, 2024 · Bacteria are microscopic single-celled organisms that inhabit virtually all environments on Earth, including the bodies of multicellular animals. Bacteria lack a membrane-bound nucleus and other internal structures.
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Dec 2, 2022 · Bacteria are microscopic living organisms that have only one cell. The word for just one is “bacterium.” Millions (if not billions) of different types of bacteria can be found all over the world, including in your body.
Bacteria definition: ubiquitous one-celled organisms, spherical, spiral, or rod-shaped and appearing singly or in chains, comprising numerous and variously classified phyla. See examples of BACTERIA used in a sentence.
Oct 4, 2019 · Bacteria Definition. Bacteria are single-celled microorganisms with prokaryotic cells, which are single cells that do not have organelles or a true nucleus and are less complex than eukaryotic cells. Bacteria with a capital B refers to the domain Bacteria, one of the three domains of life.
noun. us / bækˈtɪr.i.ə / uk / bækˈtɪə.ri.ə / Add to word list. plural of bacterium. Examples. a colony of bacteria. There are many different types of bacteria. Some bacteria can only live in anaerobic conditions. Food must be heated to a high temperature to kill harmful bacteria. Many sorts of bacteria are resistant to penicillin.
Jul 24, 2022 · Bacteria are defined as organisms that are microscopic, unicellular, independently reproducing, and mostly free-living. Bacteria are ubiquitous in nature. They are structurally simple but functionally complex organisms that form the basis of all life on earth.
noun. , (used with a singular or plural verb) (in the three-domain system of classification) the taxonomic domain comprising the bacteria. bacteria. / bækˈtɪərɪə / plural noun. a very large group of microorganisms comprising one of the three domains of living organisms.
