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Multiple Choice
Which of the following structures is not typically found in a gram-negative bacterial cell wall?
A
Outer membrane
B
Lipopolysaccharide
C
Teichoic acid
D
Peptidoglycan
Verified step by step guidance
1
Understand the structure of gram-negative bacterial cell walls: Gram-negative bacteria have a complex cell wall structure that includes an outer membrane, a thin layer of peptidoglycan, and lipopolysaccharides.
Identify the components typically found in gram-negative bacteria: The outer membrane and lipopolysaccharides are characteristic features of gram-negative bacteria, providing structural integrity and protection.
Recognize the role of peptidoglycan: Although gram-negative bacteria have a thinner layer of peptidoglycan compared to gram-positive bacteria, it is still a crucial component of their cell wall.
Understand the role of teichoic acids: Teichoic acids are polymers found in the cell walls of gram-positive bacteria, where they play a role in cell wall maintenance and ion regulation.
Conclude which structure is not typically found in gram-negative bacteria: Since teichoic acids are associated with gram-positive bacteria, they are not typically found in the cell walls of gram-negative bacteria.