Gram-negative bacteria are characterized by the presence of a gram-negative envelope. Which of the following are components of this envelope?
A) The plasma membrane, outer membrane and periplasm.
B) The plasma membrane and the outer membrane, peptidoglycan layer and periplasm.
C) The outer membrane, peptidoglycan and periplasm.
D) The plasma membrane, peptidoglycan and the outer membrane.
Ans: B) The plasma membrane and the outer membrane, peptidoglycan layer and periplasm.
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