What type of bonds are formed in the primary structure of protein?

covalent bond or an amide bond

Explanation:

The primary structure of a protein comprises of amino acids chained and joined to each other by peptide bonds to form Polypeptide Chains. A peptide bond is a type of covalent bond or an (amide bond) formed between the alpha carboxyl group of one amino acid and the alpha amino group of another amino acid.