The $\alpha$-helical model of protein was discovered by:

Which chemical bond is present in the secondary structure of proteins?

$S$ - Statement: Hemoglobin is a conjugated protein.
$R$ - Reason: Hemoglobin contains globin protein in its structure.

Which one is the most abundant protein in the animal world?

Which of the following is an aromatic amino acid?

What is the end of a polypeptide chain that contains a free carboxyl group called?