3. how does fluoroquinolone affect bacterial cells but not eukaryotic cells?
it compromises bacterial cell walls by inhibiting formation of peptidoglycan, a chemical not found in eukaryotic cells.

It compromises bacterial cell walls by inhibiting formation of peptidoglycan, a chemical not found in eukaryotic cells

Explanation:

All antibacterial agents are unable to harm the eukaryotic cells because of various reasons.  Some antibacterial agents are unable to stop protein synthesis while some interacts with the enzymes required for development of cell wall in bacteria etc.

Fluoroquinolone are artificial broad spectrum antibiotic drugs that act as natural antimicrobials  and prevent prokaryotic cell like bacteria from dividing by prohibiting DNA unwinding and duplicating and also inhibits the formation of cell wall by formation of peptidoglycan

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.