And these amino acids are connected by into bridges. So we see that the cell walls of our entire structure within our cell envelope consist of this type of molecule known as or this type of structure known as Peptidoglycan. And Peptidoglycan, generally speaking, contains relatively large pores. And these pores or holes within our cell wall basically allow relatively large molecules to actually pass into this region here, which is known as the periplasm. So the periplasm actually contains different types of important enzymes, different types of important hydrolytic enzymes that break down different products that end up within this space. And that helps our bacterial cell actually digest and break down different types of molecules, which then are ingested into our cell.