Gram-negative:Gram-negative bacteria are a group of prokaryotic cells that stain pink or red when subjected to the Gram staining procedure. Their cell wall structure differs from Gram-positive bacteria, with a thinner peptidoglycan layer and an additional outer membrane.
Peptidoglycan:Peptidoglycan is a structural component of the bacterial cell wall, consisting of sugar molecules (N-acetylglucosamine and N-acetylmuramic acid) cross-linked by short peptide chains. It provides rigidity and shape to the cell.
Cell Wall: The cell wall is a rigid structure surrounding the cell membrane of prokaryotic cells, providing protection, shape, and structural support. It is composed of various materials, such as peptidoglycan, teichoic acids, and other polymers.