A) muramic acid
B) lipopolysaccharide
C) volutin granules
D) porin
Correct Answer: D
Solution :
In cell wall of Gram-negative bacteria, the peptidoglycan layer is very thin. The outer membrane is a bilayered structure consisting chiefly of phospholipids, proteins and lipopolysaccharides. The permeability of outer membrane to nutrients is provided by proteins called porins, which form channels in the membrane.You need to login to perform this action.
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