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 bond. Definition. noun, plural: peptide bonds. (1) The covalent bond joining amino acids, particularly at the carboxyl group of one amino acid to the amino group of the other amino acid, with the concomitant release of a molecule of water.