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Q.
The characteristic cell wall material peptidoglycan has another covering of lipopolysaccharides. This specialized condition is found in
AMUAMU 2000
Solution:
In Gram negative bacteria, the outer membrane is covered by lipopolysaccharides. The lipopolysaccharides consist of complex polysaccharides covalently linked to lipid A. Lipid A has endotoxin properties, while the polysaccharides have antigenic properties. The envelope of Gram-positive bacteria consists of a peptidoglycan wall, underlying, which is the cytoplasmic membrane. Associated with the peptidoglycan are phosphorus containing acidic polymer called teichoic acids, acidic polysaccharides such as teichuronic acids.