Question

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : In the secondary structure of proteins, the parallel \(\beta\)-pleated sheets are less stable than antiparallel \(\beta\)-pleated sheets.
Reason (R) : The hydrogen bonds of parallel \(\beta\)-pleated sheets are distorted in comparison to those of antiparallel \(\beta\)-pleated sheets.
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:

Linear hydrogen bonds are stronger and more stable than bent ones.
Since antiparallel \(\beta\)-sheets feature linear bonds, they are always more stable than parallel \(\beta\)-sheets.

Answer 1

The Correct Option is A