Biology · PYQ NEET UG 2026
हिन्दी The correct statement about peptides and proteins is
- Tertiary structure of proteins has two or more polypeptide subunits.
- Only the proteins having a quaternary structure are biologically active.
- In \( \beta \)-pleated sheet structures, peptide chains are held together by intermolecular hydrogen bonds.
- In \( \alpha \)-helices, the polypeptide chain is twisted into a left-handed screw (helix) through intramolecular hydrogen bonds.
Correct answer · Option 3
In \( \beta \)-pleated sheet structures, peptide chains are held together by intermolecular hydrogen bonds.
Explanation
In \( \beta \)-pleated sheet structures, neighboring peptide chains are held together by intermolecular hydrogen bonds.