
Ryan A. answered 03/06/23
Biology, Anatomy and Physiology, MCAT and USMLE Test Prep Tutor
The answer to this question is A.
Some bacteria have a large outer cell wall composed of peptidoglycan. As a rule, antibiotics work either to kill a cell or prevent a cell from diving and growing its population even further. Penicillin works by blocking the formation of the peptidoglycan-based cell wall in notably gram-positive bacteria. Malaria species do not possess an outer peptidoglycan-based cell wall, so penicillin is inactive against Malaria species.