11. Compare and contrast the cell walls of Gram-positive and

Last updated: 7/9/2022

11. Compare and contrast the cell walls of Gram-positive and Gram-negative bacteria. gram-positive: no outer membrane, two 'layer', plasma membrane and thick peptidoglycan layer, contain teichoic and lipoteichoic acids, appear purple after gram stain. gram-negative : outer membrane, three 'layer', plasma membrane, thin layer of peptidoglycan, and outer membrane, outer membrane has phospholipids, protein and lipopolysacchride (LPS), appear pink after gram stain. similar : plasma membrane, peptidoglycan layer, protection of the bacteria.