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Discuss bio films , formation location etc
Discuss bio films , formation location etc
Solution
biofilm is a thin mat of microorganism covered with mucilage or slime screted by them. biofilms
usually occur in nutrition rich surfaces, where abundant growth factors are available for biofilm
producers. the mucilage or extracellular polymeric substance contains cell debris, amino acids
and other byproducts of bacterial metabolism.
biofilm formation: it forms at surfaces which are easy to attach and provides suitable
environment for supporting the growth of attached organism. microorganism binds to surface via
suitable receptors or adhesins and starts utilizing the available material, as they start growing
they secrete etracellular mucilage which contains many attractants(molecules that attracts other
microorganisms) such as signailing molecules which attracts other species towards the growth of
mat thus, a layer of cells develops.
location: can be found on any surfaces which renders the bacteria to grow. commonly observed
surfaces are: water pipes, tooth surfaces(dental caries), urinary catheters, surgical sites,
aquarium. all these surfaces provide abundant food material and optimum growth fascilities.
functions: it prevents organisms from antibiotics and thus make them resistant, ample growth
oppurtunities, acts as a infection/virulence factor
example: dental caries is a good example of bofilm production by Streptococcus mutans,
Catheter associated UTI caused by many gram negtive is also due to the biofilm production.

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Discuss bio films , formation location etc Discuss bio films , .pdf

  • 1. Discuss bio films , formation location etc Discuss bio films , formation location etc Solution biofilm is a thin mat of microorganism covered with mucilage or slime screted by them. biofilms usually occur in nutrition rich surfaces, where abundant growth factors are available for biofilm producers. the mucilage or extracellular polymeric substance contains cell debris, amino acids and other byproducts of bacterial metabolism. biofilm formation: it forms at surfaces which are easy to attach and provides suitable environment for supporting the growth of attached organism. microorganism binds to surface via suitable receptors or adhesins and starts utilizing the available material, as they start growing they secrete etracellular mucilage which contains many attractants(molecules that attracts other microorganisms) such as signailing molecules which attracts other species towards the growth of mat thus, a layer of cells develops. location: can be found on any surfaces which renders the bacteria to grow. commonly observed surfaces are: water pipes, tooth surfaces(dental caries), urinary catheters, surgical sites, aquarium. all these surfaces provide abundant food material and optimum growth fascilities. functions: it prevents organisms from antibiotics and thus make them resistant, ample growth oppurtunities, acts as a infection/virulence factor example: dental caries is a good example of bofilm production by Streptococcus mutans, Catheter associated UTI caused by many gram negtive is also due to the biofilm production.