The lipopolysaccharide (LPS) layer is found ONLY in the cell walls of
A) gram-positive Bacteria.
B) gram-negative Bacteria.
C) Archaea.
D) Eukarya.

Question

Quizplus · Accepted Answer

The LPS layer, also known as endotoxin, is a major component of the cell wall of gram-negative Bacteria. The layer consists of lipids and polysaccharides, and plays a role in various functions such as protecting against host immune responses and regulating permeability. Gram-positive Bacteria do not have an LPS layer, but instead have a thick peptidoglycan layer in their cell wall. Archaea and Eukarya have different types of cell membranes and cell walls not containing LPS.

The Lipopolysaccharide (LPS) Layer Is Found ONLY in the Cell