bacteria science definition
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What is Bacteria? - Definition & Types Definition/General Anatomy. A bacterium is a single-celled (unicellular) microorganism that does not have a nucleus or any other membrane-bound organelles. Bacteria are sometimes called ' prokaryotes .' In Greek, 'prokaryote' literally means 'before the nut' (where 'the nut' is the nucleus.).
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- Introduction. Bacteria are any of a very large group of single-celled microorganisms that display a wide range of metabolic types, geometric shapes and environmental habitats—and niches—of occurrence. Normally only several micrometers in length, bacteria assume the form of spheres, rods, spirals and other shapes.here are approximately 50 million bacterial organisms in a single gram of typical surface soil. The worldwide bacterial biomass exceeds that of all plants and animals on Earth.
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- Usage. Bacteria is the plural form (derived from Latin) of bacterium. Like any other plural it should be used with the plural form of the verb: the bacteria causing salmonella are killed by thorough cooking, not the bacteria causing salmonella is killed by thorough cooking.
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microbiology microbiology. the study of microorganisms, including bacteria, fungi, viruses and pathogenic protoza, and the diseases they cause.
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1. Bacteria Biology is the science of studying living beings such as bacteria, fungi, plants and animals and non-living being such as viruses. Biological contaminants of food are harmful and hazardous substances of biological origin in the food that can cause foodborne illness when they are consumed.
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Bacteria Bacteria are microscopic one-celled, prokaryotic organisms that belong to neither plant or animal. Bacteria is everywhere. Some that cause infectious bacterial diseases but some are good and help animals digest food.
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- Microbiology (from Greek μῑκρος, mīkros, small; βίος, bios, life; and -λογία, -logia) is the study of microscopic organisms, those being unicellular (single cell), multicellular (cell colony), or acellular (lacking cells).
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- 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. 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.
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Microbiology Microbiology: Microbiology, the scientific study of microorganisms, a diverse group of generally minute, simple life-forms, including bacteria, algae, fungi, protozoa, and viruses.
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microbiology n the branch of biology concerned with the study of microorganisms, including algae, bacteria, viruses, protozoa, fungi, and rickettsiae. microbiology the study of microorganisms, including bacteria, fungi, viruses and pathogenic protoza, and the diseases they cause.
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Mass of a Bacterium Bacteria are single-sell organisms that are quite simple. They are one of the earliest forms of life that appeared on Earth billions of years ago. They and archaea belong to a category of life called Prokaryotes. All other forms of life belong to Eukaryotes.
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Microbiology Introduction Bacteria are the most primitive forms of microorganisms but are composed of a great variety of simple and complex molecules and are able to carry out a wide range of chemical transformations. Depending on their requirements and the source of energy used they are classified into different nutritional groups.
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- Full Definition of MICROORGANISM. : an organism (as a bacterium or protozoan) of microscopic or ultramicroscopic size. See microorganism defined for English-language learners.See microorganism defined for kids. ADVERTISEMENT.ull Definition of MICROORGANISM. : an organism (as a bacterium or protozoan) of microscopic or ultramicroscopic size. See microorganism defined for English-language learners.
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bacteria pl n, sing -rium (-rɪəm) (Microbiology) a very large group of microorganisms comprising one of the three domains of living organisms. They are prokaryotic, unicellular, and either free-living in soil or water or parasites of plants or animals.
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Eubacteria Bacteria are microscopic organisms that comprise the domain Eubacteria. A domain is the highest grouping of organisms, superseding the level of kingdom in the classical Linnaean system of biological classification.
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Bacteria Bacteria 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 were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep portions of Earth's crust. Bacteria also live in symbiotic and parasitic relationships with plants and animals. Most bacteria have not
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What is Microbiology? - Definition & History Microbiology is the scientific study of these microorganisms. Microorganisms are those organisms that are too small to see with the naked eye and include things like bacteria, fungi, and viruses. Microbiologists study these organisms using tools, like microscopes, genetics, and culturing.
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microbiology microbiology mi·cro·bi·ol·o·gy (mī'krō-bī-ŏl'ə-jē) n. The branch of biology that deals with microorganisms and their effects on other living organisms.
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bacterium Usage notes [edit]. 1  In most formal writing, bacterium is the singular form of the noun, and bacteria the plural form. 2  This is in accord with the word's Latin etymology.
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Monera bacteria [pl. of bacterium], microscopic unicellular prokaryotic organisms characterized by the lack of a membrane-bound nucleus and membrane-bound organelles. Once considered a part of the plant kingdom, bacteria were eventually placed in a separate kingdom, Monera.
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- Definition of ARCHAEA. : microorganisms of a domain (Archaea) including especially methane-producing forms, some red halophilic forms, and others of harsh hot acidic environments (as a hot spring) — compare bacterium, eukaryote.— ar·chae·al \-əl\ adjective. — ar·chae·an \-ən\ adjective or noun.efinition of ARCHAEA. : microorganisms of a domain (Archaea) including especially methane-producing forms, some red halophilic forms, and others of harsh hot acidic environments (as a hot spring) — compare bacterium, eukaryote. — ar·chae·al \-əl\ adjective. — ar·chae·an \-ən\ adjective or noun. ADVERTISEMENT.
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- Bacteria: microscopic one-celled organisms constituting the phylum Schizomycota, of the kingdom Monera, and various species involved in infectious diseases, nitrogen fixation, fermentation or putrefaction Benthic: of or pertaining to the biogeographic region that includes the
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Microbiology Microbiology, study of microorganisms, or microbes, a diverse group of generally minute, simple life-forms that include bacteria, archaea, algae, fungi, protozoa, and viruses. The field is concerned with the structure, function, and classification of such organisms and with ways of both exploiting and controlling their activities.
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Pathogen Pathogen. Definition. noun, plural: pathogens. An agent causing disease or illness to its host, such as an organism or infectious particle capable of producing a disease in another organism.Supplement. Pathogens are mostly microscopic, such as bacteria, viruses, protozoa, and fungi, thriving in various places such as air, dust, surfaces, soil, etc.Not all bacteria are pathogens, in fact most of them are harmless and only a few are pathogenic.Examples of pathogenic bacteria are Mycobacterium tuberculosis (causing tuberculosis), Streptococcus penumoniae (causing pneumonia), Shigella, Campylobacter and Salmonella (causing foodborne illnesses).ot all bacteria are pathogens, in fact most of them are harmless and only a few are pathogenic. Examples of pathogenic bacteria are Mycobacterium tuberculosis (causing tuberculosis), Streptococcus penumoniae (causing pneumonia), Shigella, Campylobacter and Salmonella (causing foodborne illnesses).
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Wiki: Microorganisms & Cheese Making The study of bacteria is known as bacteriology, a branch of microbiology. There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water. There are approximately 5×1030 bacteria on Earth, forming a biomass which exceeds that of all plants and animals.
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bacterium a beneficial bacterium found in the intestinal tract of healthy mammals; often considered to be a plant. a rodlike bacterium (especially any of the rod-shaped or branched bacteria in the root nodules of nitrogen-fixing plants) a large group of bacteria having rigid cell walls; motile types have flagella.