Question

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A): Peptidoglycan-containing bacterial cell wall is resistant to hydrolytic action of many proteases.
Reason (R): The presence of D-amino amino acids in the peptidoglycan structure of bacterial cell wall makes it resistant to most proteases.

In light of the above statements, choose the correct answer from the options given below.

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
• C. (A) is true but (R) is false.
• D. (A) is false but (R) is true.

Hint:

While bacterial cell walls resist proteases due to D-amino acids, they remain susceptible to the enzyme lysozyme, which hydrolyzes the \(\beta\)-(1,4) glycosidic bonds between NAG and NAM sugars rather than peptide bonds.

Answer 1

The Correct Option is A