Final answer:
The tertiary structure describes the final folding pattern of a single peptide, which is stabilized by interactions between amino acids.
Step-by-step explanation:
The final folding pattern of a single peptide is described by the tertiary structure. After the amino acids in a peptide chain form secondary structures like alpha-helices or beta-sheets, the entire chain folds into a specific 3-dimensional shape, which is known as the tertiary structure. This structure is stabilized by various interactions between amino acids, such as hydrogen bonds, disulfide bonds, and hydrophobic interactions.