The edible portions of the leek are the white base of the leaves (above the roots and stem base), the light green parts, and to a lesser extent the dark green parts of the leaves. One of the most popular uses is for adding flavor to stock.
HOME BIOLOGY DEFINITION. Peptide bond. A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H 2 O). This is a dehydration synthesis reaction, and usually occurs between amino acids.
Peptide. A compound that is made up of two or more amino acids joined by covalent bonds which are formed by the elimination of a molecule of H 2 O from the amino group of one amino acid and the carboxyl group of the next amino acid.Peptides larger than about 50 amino acid residues are usually classified as proteins.eptide. A compound that is made up of two or more amino acids joined by covalent bonds which are formed by the elimination of a molecule of H 2 O from the amino group of one amino acid and the carboxyl group of the next amino acid.