Fact Check: Peptides are short chains of amino acids, and insulin is an example of a peptide.

Claim: Peptides are short chains of amino acids, and insulin is an example of a peptide.

Verdict: Correct (95% confidence)

Explanation: According to the National Center for Biotechnology Information (NCBI), peptides are defined as short strings of 2 to 50 amino acids, and insulin is a peptide hormone consisting of two disulfide-linked peptide chains totaling 51 amino acids (StatPearls - NCBI Bookshelf). Harvard Health also confirms that peptides are short chains of amino acids, which are the building blocks of proteins (Harvard Health). Additionally, WebMD states that insulin is a 51-amino-acid-long peptide hormone (WebMD). Thes...