BIOMOLECULES AND ENZYMES

Detailed explanation-1: -A disulfide bond is a true covalent bond and as such is the strongest of these interactions. Ionic bonds come in a distant second in terms of bond strength as they form by the attraction of opposite full ionic charges.

Detailed explanation-2: -The –SH or sulfhydryl groups are present in the R group of cysteine amino acids. When two cysteine molecules are in close proximity, the sulfhydryl group present between them oxidizes and forms a bond called a disulfide bond a functional group.

Detailed explanation-3: -Answer and Explanation: Out of the list of possibilities, the strongest type of bond is the covalent bond formed in the peptide bond.

Detailed explanation-4: -Covalent bonds are the strongest chemical bonds contributing to protein structure. A covalent bond arises when two atoms share a pair of electrons.