Multiple Choice
Endospores are:
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26. Prokaryotes
Prokaryotic Cell Structure
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Which of the following statements about gram-negative cell walls is false?
A
Gram-negative cell walls lack an outer membrane.
B
Gram-negative cell walls are less susceptible to antibiotics targeting peptidoglycan.
C
Gram-negative cell walls have a thin peptidoglycan layer.
D
Gram-negative cell walls contain lipopolysaccharides.
Verified step by step guidance1
Understand the structure of gram-negative bacteria: Gram-negative bacteria have a unique cell wall structure that includes an outer membrane, a thin peptidoglycan layer, and lipopolysaccharides.
Identify the role of the outer membrane: The outer membrane in gram-negative bacteria provides an additional barrier, making them less susceptible to certain antibiotics that target peptidoglycan.
Examine the peptidoglycan layer: Gram-negative bacteria have a thin peptidoglycan layer compared to gram-positive bacteria, which have a thick peptidoglycan layer.
Consider the presence of lipopolysaccharides: Lipopolysaccharides are found in the outer membrane of gram-negative bacteria and play a role in the structural integrity and protection of the cell.
Evaluate the false statement: The statement 'Gram-negative cell walls lack an outer membrane' is false because gram-negative bacteria do indeed have an outer membrane.
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