Question

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question 30
lipopolysaccharide is an important cell envelope component of
a mycoplasmas
b acid - fast bacteria
c protoplasts
d gram - negative bacteria
e gram - positive bacteria

Explanation:

Lipopolysaccharide (LPS) is a major component of the outer - membrane of gram - negative bacteria. It is not present in mycoplasmas (which lack a cell wall), acid - fast bacteria (which have a waxy cell wall), or protoplasts (which are wall - less forms of bacteria). Gram - positive bacteria have teichoic acids and peptidoglycan but not LPS.

Answer:

D. gram - negative bacteria