What is the denaturation of proteins? Write the name of only pyrimidine base in RNA.

Answer:

Denaturation: When a protein is subjected to heat, change of pH, strong acids, bases or certain chemicals, the hydrogen bonds and other forces that hold its secondary and tertiary structure are disturbed. The protein loses its three-dimensional structure and biological activity, while its primary structure (sequence of amino acids) remains intact. This is denaturation; e.g. coagulation of egg albumin on boiling, curdling of milk.

Pyrimidine base present only in RNA: Uracil (U). (RNA contains the pyrimidines uracil and cytosine; uracil replaces the thymine of DNA.)