Question:
Which structural component is directly responsible for Gram-positive resistance to osmotic lysis?
Which structural component is directly responsible for Gram-positive resistance to osmotic lysis?
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Gram-positive bacteria:
\[
\boxed{
\begin{aligned}
&\text{Thick peptidoglycan layer}
&\text{Teichoic acids present}
&\text{No outer membrane}
\end{aligned}
}
\]
The thick peptidoglycan prevents osmotic lysis.
Updated On: Jul 18, 2026
- Lipopolysaccharide
- Peptidoglycan thickness
- Capsule
- Teichoic acids only
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Gram-positive bacteria possess a thick peptidoglycan layer in their cell wall.
This rigid layer provides mechanical strength and prevents the cell from bursting due to osmotic pressure.
Hence,
\[
\boxed{\text{Peptidoglycan thickness}}
\]
is directly responsible for resistance to osmotic lysis.
Therefore,
\[
\boxed{(B)}
\]
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