๐Ÿฆ microbiology review

key term - Biofilm

Definition

A biofilm is a complex aggregation of microorganisms growing on a surface, encased in a self-produced matrix of extracellular polymeric substances (EPS). These communities are highly resistant to antimicrobial agents and can be found in various environments, including medical devices and human tissues.

5 Must Know Facts For Your Next Test

  1. Biofilms can form on both living and non-living surfaces, including medical implants such as catheters and joint prostheses.
  2. The EPS matrix provides protection to the microorganisms within the biofilm from antibiotics and the host's immune system.
  3. Infections associated with biofilms are often chronic and difficult to eradicate due to their resistance to antimicrobial treatments.
  4. Biofilms play a significant role in dental plaque formation, contributing to oral diseases such as cavities and periodontal disease.
  5. Biofilm formation is a key factor in the pathogenicity of many bacteria, aiding in their ability to colonize and persist in hostile environments like the urogenital tract.

Review Questions

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