(microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants
Plural form of bacterium.
Bacteria constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most habitats on the planet, growing in soil, water, acidic hot springs, radioactive waste, and deep in the Earth's crust, as well as in organic matter and the live bodies of plants and animals, providing outstanding examples of mutualism in the digestive tracts of humans, termites and cockroaches. There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water; in all, there are approximately 5×10^30 bacteria on Earth, forming a biomass that exceeds that of all plants and animals. Bacteria are vital in recycling nutrients, with many steps in nutrient cycles depending on these organisms, such as the fixation of nitrogen from the atmosphere and putrefaction. In the biological communities surrounding hydrothermal vents and cold seeps, bacteria provide the nutrients needed to sustain life by converting dissolved compounds such as hydrogen sulphide and methane. On 17 March 2013, researchers reported data that suggested bacterial life forms thrive in the Mariana Trench, the deepest spot on the Earth. Other researchers reported related studies that microbes thrive inside rocks up to 1900 feet below the sea floor under 8500 feet of ocean off the coast of the northwestern United States. According to one of the researchers,"You can find microbes everywhere — they're extremely adaptable to conditions, and survive wherever they are."
U.S. National Library of Medicine
One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.
The numerical value of bacteria in Chaldean Numerology is: 1
The numerical value of bacteria in Pythagorean Numerology is: 5
Sample Sentences & Example Usage
If there’s bacteria on the surface of a cut of meat, the small tines that pierce the meat could push the bacteria inside, or create more avenues for bacteria to transfer to the inside of the meat.
Interactions between the millions of bacteria living in our gut and what we eat is a very important factor in gut health, but we don't know how MRE foods interact with those bacteria to impact gut health, ultimately, discovering how eating MREs influences gut bacteria and gut health will help our efforts to continually improve the MRE.
Now copsin kills bacteria by binding to an essential cell wall building block, the cell wall you can consider like the achilles heel of bacteria, so when you disrupt the cell wall synthesis bacteria usually dies rapidly. The binding pattern of copsin on this building block is very unique and therefore copsin is active against bacteria resistant to conventional antibiotics.
Well, we've seen in our research that the honey bees actually add great flora of lactic acid bacteria in honey so the mead, when produced, is actually fermented by these lactic acid bacteria together with wild yeasts and the lactic acid bacteria can really kill off all the dangerous pathogens that are even resistant against antibiotics. So our thinking is that the mead, when you consume the mead, these (antibacterial substances in) lactic acid bacteria in the drink can actually be transferred to your blood and help you when you are infected with dangerous bacteria or promote health, preventing infections.
Even while I protest the assembly-line production of our food, our songs, our language, and eventually our souls, I know that it was a rare home that baked good bread in the old days. Mother's cooking was with rare exceptions poor, that good unpasteurized milk touched only by flies and bits of manure crawled with bacteria, the healthy old-time life was riddled with aches, sudden death from unknown causes, and that sweet local speech I mourn was the child of illiteracy and ignorance. It is the nature of a man as he grows older, a small bridge in time, to protest against change, particularly change for the better.
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Translations for bacteria
From our Multilingual Translation Dictionary
- bakteerikanta, bakteeritFinnish
- bakteríur, gerlarIcelandic
- bakteriaKalaallisut, Greenlandic
- បាក់តេរី, វេត្រាណូKhmer
- 박테리아, 세균Korean
- bacteriën, bacterieDutch
- chʼosh doo yitʼíniiNavajo, Navaho
- bakterie, bakterierSwedish
- vi khuẩnVietnamese
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