definition of biofilm
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- Biofilm definition: a thin layer of living organisms | Meaning, pronunciation, translations and examples English Dictionary | Thesaurus | Translator | Grammar | Scrabble | Blog English
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Biofilm Microbes form a biofilm in response to many factors, which may include cellular recognition of specific or non-specific attachment sites on a surface, nutritional cues, or in some cases, by exposure of planktonic cells to sub-inhibitory concentrations of antibiotics.ote 1: A biofilm is a system that can be adapted internally to environmental conditions by its inhabitants.
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Whatâs So Important About the Bottom of a Cargo Ship? A Smithsonian Dive Team Explains Smithsonian divers explore the hull of a massive cargo ship for biological invasions of organisms that hitch a ride on the hull of the vessel. (Photograph by Laurie Penland) Biofilms are microorganisms that accumulate in layers on the ship's hull.
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Microbiota For other uses, see Microbiota (disambiguation). Depiction of the human skin and bacteria that predominate. A microbiota is an ecological community of commensal, symbiotic and pathogenic microorganisms found in and on all multicellular organisms studied to date from plants to animals. A microbiota includes bacteria, archaea, protists, fungi and viruses.
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- A biofilm is any group of microorganisms in which cells stick to each other on a surface.ence, the dispersal process is a unique stage during the transition from biofilm to planktonic lifestyle in bacteria. Dispersed cells are found to be highly virulent against macrophages and Caenorhabditis elegans, but highly sensitive towards iron stress, as compared with planktonic cells.
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- Other characteristics of the aqueous medium, such as pH, nutrient levels, ionic strength, and temperature, may play a role in the rate of microbial attachment to a substratum. Several studies have shown a seasonal effect on bacterial attachment and biofilm formation in different aqueous systems (17, 18). biofilm is an assemblage of surface-associated microbial cells that is enclosed in an extracellular polymeric substance matrix. Van Leeuwenhoek, using his simple microscopes, first observed microorganisms on tooth surfaces and can be credited with the discovery of microbial biofilms.
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Biocide A biocide is defined in the European legislation as a chemical substance or microorganism intended to destroy, deter, render harmless, or exert a controlling effect on any harmful organism by chemical or biological means.
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- Definition of biocide - a poisonous substance, especially a pesticide., the destruction of life Definition of biocide - a poisonous substance, especially a pesticide., the destruction of life dictionary
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- Medical Definition of BIOGENESIS. 1. : the development of life from preexisting life—compare abiogenesis. 2. : a supposed tendency for stages in the evolutionary history of a race to briefly recur during the development and differentiation of an individual of that race. 3.
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Biomat A bio-mat is a layer of slimy dark-grey colored bacteria that forms and lives in your absorption field. This bacteria can slow your systems ability to absorb water by physically clogging the soil interface. Some bio-mat is normal and in fact healthy. When nutrient ladened wastewater passes through the bio-mat, it consumes some of the wastewater’s nutrients, partially cleaning the water before it passes into the soil.
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Biofilm The final stage of biofilm formation is known as dispersion, and is the stage in which the biofilm is established and may only change in shape and size. The development of a biofilm may allow for an aggregate cell colony (or colonies) to be increasingly antibiotic resistant.ormation of a biofilm begins with the attachment of free-floating microorganisms to a surface. These first colonists adhere to the surface initially through weak, reversible adhesion via van der Waals forces.
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- Medical Definition of BIOFILM. : a thin usually resistant layer of microorganisms (as bacteria) that form on and coat various surfaces (as of catheters or water pipes). a thin usually resistant layer of microorganisms (as bacteria) that form on and coat various surfaces.
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What is a capsule in a prokaryotic cell? A less discrete structure or matrix which embeds the cells is a called a slime layer or a biofilm. A type of capsule found in bacteria called a glycocalyx is a thin layer of tangled polysaccharide fibers which occurs on surface of cells growing in nature (as opposed to the laboratory).
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Plaque and Tartar PLAQUE & TARTAR. Definition. Plaque is a sticky, colorless film of bacteria that constantly forms on our teeth and along the gum line. Plaque contains bacteria that cause cavities and gum disease.Tartar is calcified or hardened plaque that attaches to the enamel on your teeth and below the gum line.LAQUE & TARTAR. Definition. Plaque is a sticky, colorless film of bacteria that constantly forms on our teeth and along the gum line. Plaque contains bacteria that cause cavities and gum disease.
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- Abstract. Microorganisms attach to surfaces and develop biofilms. Biofilm-associated cells can be differentiated from their suspended counterparts by generation of an extracellular polymeric substance (EPS) matrix, reduced growth rates, and the up-and down-regulation of specific genes. biofilm is an assemblage of surface-associated microbial cells that is enclosed in an extracellular polymeric substance matrix. Van Leeuwenhoek, using his simple microscopes, first observed microorganisms on tooth surfaces and can be credited with the discovery of microbial biofilms.
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- Any breach in these linings provides them a chance of tissue invasion and thus produce disease. Micro-organisms attach to a foreign bodies and grow within biofilms in relation to them. These are situations where the identification of progression from colonization to invasion is important.
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Microbiologically Influenced Corrosion in Industrial Systems Microbiologically influenced corrosion (MIC) is the degradation of materials, usually metal, due to the activity of microorganisms. It is also known as biocorrosion and this form of corrosion mostly takes place underneath biofilms, which consist of colonies of microorganisms attached to a surface[1].MIC applies not only to metals but also to non-metallic surfaces such as concrete and can result in severe industry losses[1].echanism. Corrosion, the oxidation of metal, requires the simultaneous reduction of another chemical. MIC usually takes place in stagnant water, and either dissolved oxygen or hydrogen is reduced in order for the process to proceed[1].
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- Biofilm: An aggregate of microbes with a distinct architecture. A biofilm is like a tiny city in which microbial cells, each only a micrometer or two long, form towers that can be hundreds of micrometers high.The streets between the towers are really fluid-filled channels that bring in nutrients, oxygen and other necessities for live biofilm communities.acteria growing in a biofilm are highly resistant to antibiotics, up to 1,000 times more resistant than the same bacteria not growing in a biofilm. Standard antibiotic therapy is often useless and the only recourse may be to remove the contaminated implant.
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plaque A biofilm of bacteria in a matrix of polysaccharides and other substances on the surface of a tooth or teeth. 3. a. A deposit of fatty material on the inner lining of an arterial wall, characteristic of atherosclerosis. b. The material that such a deposit is composed of.
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Medical Definition of Biosafety Medical Definition of Biosafety. Biosafety: The application of knowledge, techniques and equipment to prevent personal, laboratory and environmental exposure to potentially infectious agents or biohazards. Biosafety defines the containment conditions under which infectious agents can be safely manipulated. The objective of containment is to confine biohazards and to reduce the potential exposure of the laboratory worker, persons outside of the laboratory, and the environment to potentially infectious agents.
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- Definition of biofilm from the Collins English Dictionary Indefinite pronouns The indefinite pronouns are used when you do not know or do not need to say precisely who or what you are referring to.
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bio The definition of a bio is a short story written about a person's life. An example of a bio is a few paragraphs describing a person's life history. Bio means of life or living things. An example of bio is biography which is the story of a person's life.
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- Dental biofilm forms on the tooth only minutes after brushing. It can be difficult to visualise dental plaque on the hard tissue surfaces, however a rough surface can be felt after eating or before toothbrushing if there is a thick deposit of dental plaque.
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microbiota mi·cro·bi·o·ta. n. (used with a sing. or pl. verb) The microorganisms that typically inhabit a particular environment, such as the soil, a body of water, or a site on or in an organism, considered as a group. Also called microbiome.i·cro·bi·o·ta. n. (used with a sing. or pl. verb) The microorganisms that typically inhabit a particular environment, such as the soil, a body of water, or a site on or in an organism, considered as a group. Also called microbiome.
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Fouling Biofouling or biological fouling is the undesirable accumulation of micro-organisms, algae and diatoms, plants, and animals on surfaces, for example ships' hulls, or piping and reservoirs with untreated water. This can be accompanied by microbiologically influenced corrosion (MIC).
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- Biofilm is typically composed of many different microorganisms and bacteria held together by biological polymers that improve the ability of bacteria to adhere to and proliferate on wet surfaces. Most often found in shades of yellow or brown, biofilms can be many colors, including pink, orange, salmon, or coral.