An Amino Sugar Called N-Acetylmuramic Acid Is an Important Building

Multiple Choice

An amino sugar called N-acetylmuramic acid is an important building block of the cell wall of some bacteria. Penicillin prevents this amino sugar from being incorporated into the bacterial cell wall. Therefore,

A) penicillin affects bacteria but not eukaryotes because eukaryotic cell walls are different.
B) bacterial cells that had already formed their cell walls would be unaffected.
C) penicillin would stop the growth of active colonies of susceptible bacteria.
D) All of the choices are correct.