Jump to: navigation, search ... A peptide bond is a chemical bond formed between two molecule s when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O). This is a dehydration synthesis re action, and usually occurs between amino acids. Peptide bond.
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What is Bulk Mail? Is it Right for You? The term bulk mail refers to larger quantities of mail prepared for mailing at reduced postage. In Business Mail 101, the term bulk mail means commercial First-Class Mail and advertising mail (called USPS Marketing Mail by the Postal Service). Commercial prices are available for other classes of mail, too. The Postal Service uses the terms bulk and presorted interchangeably. Bulk prices are lower than single-piece prices.