Question

Which statements about peptide bonds are true?

a) Peptide bonds form between amino acids through dehydration synthesis.
b) Peptide bonds involve the release of water molecules.
c) Peptide bonds contribute to the primary structure of proteins.
d) Peptide bonds are broken during the process of denaturation.

Answer 1

Statements about peptide bonds forming through dehydration synthesis and contributing to the primary structure of proteins are true. However, peptide bonds are not always broken during denaturation.

Step-by-step explanation:

Peptide bonds are fundamental to the structure and function of proteins. Dehydration synthesis is the process that forms peptide bonds, where the carboxyl group of one amino acid links to the amino group of another, releasing a molecule of water.

Statements (a) and (b) are true because they accurately describe this process. Statement (c) is also true, as peptide bonds are crucial for the primary structure of proteins, determining the sequence of amino acids.

However, statement (d) is not entirely accurate because while peptide bonds can be broken during denaturation, this process primarily affects the protein's secondary, tertiary, and quaternary structures, and does not always break peptide bonds.