<prompt> Peptidoglycans are found in large quantities in cell wall of the following microorganism:VirusGram positive bacteriaGram negative bacteriaAll of the above  <response>: The peptidoglycan layer is much thicker in gram-positive than in gram-negative bacteria. Comparison of Cell Walls of Gram-Positive and Gram-Negative Bacteria: Component Gram-Positive Cells Gram-Negative Cells Peptidoglycan Thicker; multilayer Thinner; single layer Teichoic acids Present Absent Lipopolysaccharide endotoxin Absent Present Ref: Levinson W. 2012. Chapter 2. Structure of Bacterial Cells. In W. Levinson Ed, Review of Medical Microbiology Immunology, 12e. 