Question

in figure which diagram of a cell wall possesses lipid a/endotoxin responsible for symptoms associated with infection? a b b neither a nor b c the answer cannot be determined based on the information provided. d a

Explanation:

Lipid A is part of lipopolysaccharide (LPS) in the outer - membrane of Gram - negative bacteria cell walls. Gram - negative cell walls have a thin peptidoglycan layer and an outer membrane with LPS containing lipid A. The diagram on the left (a) appears to represent a Gram - positive cell wall which lacks an outer membrane and thus no lipid A. The diagram on the right (b) represents a Gram - negative cell wall which has lipid A in its outer membrane.

Answer:

A. b