Macmillan Learning
Identify the statements that accurately describe the drug penicillin.
Penicillin interferes with the synthesis of peptidoglycan, weakening the bacterial cell wall.
? Certain bacterial strains, such as S. aureus, have developed resistance to penicillin.
Penicillin is effective only against gram-negative bacteria.
Penicillin is used less in modern times because it affects some human cells as well as bacteria.
Penicillin is effective only against gram-positive bacteria.