Final answer:
Antibiotics that focus on specific bacteria can affect both Gram-positive and Gram-negative bacteria.
Step-by-step explanation:
Antibiotics that focus on specific bacteria can affect both Gram-positive and Gram-negative bacteria.
Gram-positive bacteria have a different cell wall structure compared to Gram-negative bacteria. The cell wall of Gram-positive bacteria is composed mainly of peptidoglycan, while Gram-negative bacteria have a thinner peptidoglycan layer surrounded by an outer membrane containing lipopolysaccharides (LPS).