Question

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

Explanation:

Peptidoglycan is a major component of bacterial cell - walls. Gram - positive bacteria have a thick layer of peptidoglycan in their cell walls, while Gram - negative bacteria have a thinner layer. Yeasts are fungi and do not have peptidoglycan in their cell walls. Archaea have cell walls that lack peptidoglycan. Penicillin inhibits peptidoglycan synthesis in bacteria.

Answer:

It is present in the cell walls of almost all bacteria.