Some animals contain genes that encode small peptides known as cathelicidins. By binding to lipids in bacterial membranes, these peptides kill many different bacteria and therefore weaken or damage those membranes. Scientists have made a synthetic form of cathelicidin that kills bacteria resistant to several antibiotics, including tetracycline. Which pair of statements explains how this synthetic cathelicidin could help to solve the problem of antibiotic resistance?
- A1 and 3
- B1 and 4
- C2 and 3
- D2 and 4