Since penicillin interferes with peptidoglycan synthesis, it means that the drug will have no effects on archaea.
Archaea cell walls
The cell wall of archaea consists mostly of polysaccharides and glycoconjugates. In order words, the cell walls of archaea lack peptidoglycan.
Since penicillin kills bacteria by interfering with the synthesis of peptidoglycan, it simply means that the drug will have no effect on archaea, since they do not have peptidoglycan in their cell walls.
More on archaea can be found here: https://brainly.com/question/1475001
