Which type of bond joins two amino acids during dehydration?

The bond that joins two amino acids during dehydration is a peptide bond. Peptide bonds are a specific type of covalent bond formed when the carboxyl group of one amino acid reacts with the amino group of another, releasing a water molecule in the process, which is why it is termed dehydration synthesis. This covalent linkage is critical for forming proteins, as it establishes the primary structure of the protein by connecting amino acids in a defined sequence.

While covalent bonds do encompass a wider range of bond types, the term "peptide bond" specifically refers to the connection formed between amino acids. This distinction is essential in biochemistry, particularly in the context of protein structure and function.