Question

which statement about peptidoglycan is true? it is present in larger amounts in the cell walls of gram - negative bacteria than in the cell walls of gram - positive bacteria. it is present in the cell walls of almost all bacteria. it is present in the cell walls of yeasts. it is present in the cell walls of archaea. its synthesis is unaffected by penicillin.

Explanation:

Peptidoglycan is a major component of bacterial cell - walls. Penicillin inhibits peptidoglycan synthesis. Archaea do not have peptidoglycan in their cell walls, and yeasts are fungi with chitin - containing cell walls. Gram - positive bacteria have a thick layer of peptidoglycan, while Gram - negative bacteria have a thin layer.

Answer:

Its synthesis is unaffected by penicillin.