Download Spring 2015-Chapter 6

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

List of types of proteins wikipedia, lookup

Mitosis wikipedia, lookup

Cytokinesis wikipedia, lookup

Extracellular matrix wikipedia, lookup

Amitosis wikipedia, lookup

Organ-on-a-chip wikipedia, lookup

Endomembrane system wikipedia, lookup

Cellular differentiation wikipedia, lookup

Cell culture wikipedia, lookup

Cell growth wikipedia, lookup

Cell encapsulation wikipedia, lookup

Cell cycle wikipedia, lookup

Tissue engineering wikipedia, lookup

Chemotaxis wikipedia, lookup

Biofilm wikipedia, lookup

Transcript
biofilm is any group of microorganisms in which cells stick to each other
on a surface. These adherent cells are frequently embedded within a selfproduced matrix of extracellular polymeric substance (EPS). Biofilm
extracellular polymeric substance, which is also referred to as slime
(although not everything described as slime is a biofilm), is a polymeric
conglomeration generally composed of extracellular DNA, proteins, and
polysaccharides. Biofilms may form on living or non-living surfaces
and can be prevalent in natural, industrial and hospital settings.The
microbial cells growing in a biofilm are physiologically distinct from
planktonic cells of the same organism, which, by contrast, are single-cells
that may float or swim in a liquid medium. 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. When a cell switches to the biofilm mode
of growth, it undergoes a phenotypic shift in behavior in which large suites
of genes are differentially regulated.