BIOFILM FORMATION

What is a biofilm?

• A group of viruses

• An aggregate of microorganisms stuck to each other or to a surface

• A type of vaccine

• A type of antibiotic

What is the primary component of Biofilm EPS?

• DNA

• All of the above

• Proteins

• Polysaccharides

Where can biofilms be found in nature?

• In the air

• On metal surfaces

• In the gut lining of animals

• In outer space

What are the steps of biofilm formation?

• Absorption, Replication, Transformation, Degradation, Elimination

• Connection, Separation, Multiplication, Maturity, Release

• Invasion, Growth, Expansion, Contraction, Removal

• Adhesion, Attachment, Proliferation, Maturation, Detachment

What percentage of infections treated in the developed world are caused by microbial biofilms?

• 25%

• 50%

• 65%

• 10%

Which of the following is NOT an example of a medical device that can be affected by biofilm infections?

• Artificial joints

• Catheters

• Mechanical heart valves

• Dental crowns

Why are biofilms remarkably difficult to treat with antimicrobials?

• They are resistant to detergents

• They are too small to target

• Antimicrobials are inactivated or fail to penetrate into the biofilm

• They are easily removed by the immune system

What is the role of quorum sensing in biofilms?

• It prevents gene transfer among bacteria

• It triggers the immune response against biofilms

• It increases the susceptibility of biofilms to antibiotics

• It helps bacteria communicate with each other within the biofilm