Which of the following is a difference between gram+ and gram- cells?
a. gram+ cells contain less peptidoglycan than gram- cells
b. gram- cell walls contain more peptidoglycan than gram+ cells
c. only gram+ cells have peptidoglycan
d. only gram- cells have a lipopolysaccharide layer
Ans: d. only gram- cells have a lipopolysaccharide layer
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