Peptide bonds are commonly known as what type of bonds?

Peptide bonds are commonly referred to as end bonds because they are the specific type of bond that links amino acids together to form proteins. These bonds are formed through a dehydration synthesis reaction, wherein the carboxyl group of one amino acid reacts with the amine group of another, releasing a molecule of water and creating a covalent bond between them.

The term "end bonds" differentiates them from other types of bonds in the structure of amino acids and proteins. This is particularly important in the field of cosmetology, as understanding the structure of proteins can help professionals identify how products will interact with hair and skin, which are largely made up of proteins.

Other types of bonds mentioned, such as hydrogen bonds, disulfide bonds, and electrovalent bonds, refer to different bonding interactions that occur in various substances and scenarios but are not directly related to the formation of peptides in proteins. For instance, hydrogen bonds contribute to the secondary structure of proteins, while disulfide bonds provide stability to protein structures through covalent links between cysteine residues. Electrovalent bonds, generally associated with ionic compounds, do not play a role in the formation of peptide chains.