Answer any FOUR of the following questions.
b. What is peptide linkages? How many peptide bonds are present in a tetra-peptide?·

Explanation

(a)
(b) The peptide linkage (-CONH-) formed between two amino acids by the interaction of amino (-NH2) group of one amino acid with carboxylic (-COOH) group of another amino acid with the elimination water molecule.
Three/3
(c ) insulin/Glucagon
detailed Answer:
(b) A peptide bond is the chemical bond between two molecules when the carboxyl group of one molecule reacts with the amino group of other molecule, releasing a molecule of water. Peptide linkage is responsible for the primary structure of protein.