The destruction of the biological nature and activity of proteins by heat or chemical agents is called:

Proteins are primarily essential for which of the following needs of the body?

Which of the following amino acids is involved in the formation of $Heme$?

Statement $P$: The quaternary structure of proteins is either globular or fibrous.
Statement $Q$: The three-dimensional arrangement of molecules consisting of a single polypeptide chain is the quaternary structure of proteins.

Haemoglobin molecule is made up of

Assertion: Human diet should compulsorily contain glycine,serine,and tyrosine.
Reason: Essential amino acids cannot be synthesized in the human body.