When an egg is boiled its phyśical nature changes. i. Is there any change in its chemical nature? Méntion the peculiar type of bond present in proteins. iii. Explain the secondary structure of proteins"

Explanation

i. No.
ii. Peptide bond '(-CONH-)'
ii. Secondary structure gives the inanner in which the polypeptide chains are folded' and-bent as a result of hydrogen boriding. Two types of secondary structure (i) 'alpha' helix structure and" (ii) 'beta' -pleated sheet structure."