Question
Consider the following statements:
1. Biofilms can form on medical implants within human tissues.
2. Biofilms can form on food and food processing surfaces.
3. Biofilms can exhibit antibiotic resistance.
Which of the statements given above are correct?
Correct Answer — D
Explanation
Biofilms readily form on medical implants and catheters (1) and on food-processing surfaces, where pathogens like Salmonella can persist (2). Their protective matrix also makes embedded bacteria far more resistant to antibiotics than free-floating ones (3) — all three statements are correct.