試題詳解

9. Which of the following is true of the bacterial lipopolysaccharide (LPS)?
(A) The core polysaccharide part of LPS contributes to negative charge on cell surface.
(B) The O antigen is the most conserved (constant) part of LPS.
(C) It is found in the plasma membrane of gram-negative bacteria.
(D) It is found in the outer membrane of gram-positive bacteria.
(E) The lipid A part of LPS can act as an exotoxin.