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- Dictionarybacterium/bakˈtɪərɪəm/
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.
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Bacteria are single-celled microorganisms with the absence of the nucleus and other c ell organelles; hence, they are classified as prokaryotic organisms. They are also very versatile organisms, surviving in extremely inhospitable conditions. Such organisms are called extremophiles.
a type of very small organism that lives in air, earth, water, plants, and animals, often one that causes disease: an illness caused by bacteria in drinking water. The bacterium Streptococcus pneumoniae causes about a third of some 3,000 annual meningitis cases.
The meaning of BACTERIUM is any of a domain (Bacteria) of chiefly round, spiral, or rod-shaped single-celled prokaryotic microorganisms that typically live in soil, water, organic matter, or the bodies of plants and animals, that make their own food especially from sunlight or are saprophytic or parasitic, are often motile by means of flagella ...
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.
Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria play a vital role in many stages of the nutrient cycle by recycling nutrients and the fixation of nitrogen from the atmosphere.
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.
Jul 17, 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.
Any of a large group of one-celled organisms that lack a cell nucleus, reproduce by fission or by forming spores, and in some cases cause disease. They are the most abundant lifeforms on Earth, and are found in all living things and in all of the Earth's environments. Bacteria usually live off other organisms.
a type of very small organism that lives in air, earth, water, plants, and animals, often one that causes disease: an illness caused by bacteria in drinking water. The bacterium Streptococcus pneumoniae causes about a third of some 3,000 annual meningitis cases.
BACTERIUM meaning: any one of a group of very small living things that often cause disease usually plural.
