Previous Year NEET Question- Biomolecules L-7

Question: The incorrect statement about denaturation of proteins is:#

A) Uncoiling of the helical structure takes place

B) It results due to change of temperature and/or $\mathrm{pH}$

C) It results in loss of biological activity of proteins

D) A protein is formed from amino acids linked by peptide bonds

Answer: A protein is formed from amino acids linked by peptide bonds#

Solution:#

• Proteins are polymers of $\alpha$-amino acids and they are connected to each other by peptide bond, but this is not denaturation process.
• Due to denaturation globules unfold and helix get uncoiled and protein loses its biological activity.

Denaturation can be caused if protein in its native form, is subjected to physical change like change in temperature or chemical change like change in $\mathrm{pH}$