Question

multiple choice question
the outer covering of gram - negative bacteria contains ______ a complex of carbohydrate and lipid responsible for symptoms such as fever and shock.
lipopolysaccharide
glycocalyx
cellulose
peptidoglycan
chitin

Explanation:

Lipopolysaccharide (LPS) is a complex of carbohydrate and lipid in the outer - covering of gram - negative bacteria and is an endotoxin that can cause symptoms like fever and shock. Glycocalyx is a general term for the carbohydrate - rich coating on cells. Cellulose is a plant cell wall component. Peptidoglycan is a major component of the cell wall in both gram - positive and gram - negative bacteria but is not the complex causing fever and shock. Chitin is a component of fungal cell walls and the exoskeleton of arthropods.

Answer:

lipopolysaccharide