Question
Q37) Consider the following statements
- Biofilms can form on medical implants within human tissues.
- Biofilms can form on food and food processing surfaces.
- Biofilms can exhibit antibiotic resistance.
Which of the statements given above are correct?
- 1 and 2 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
Answer: 4
Detailed Explanation
A biofilm is a thick layer of prokaryotic organisms that have aggregated to form a colony. The colony attaches to a surface with a slime layer which aids in protecting the microorganisms. There are a number of reasons why biofilms are formed, all of which promote growth and survival of the microorganisms. Biofilms are found in almost all environments, and can have negative effects.
· The failure of antibacterial agents to rapidly penetrate into all areas of a biofilm has been considered as a contributing factor to biofilm resistance.
· Reports indicate that species-composition of biofilms and the choice of antibiotic have a marked impact on antibiotic penetration.