LIFE SCIENCE

Detailed explanation-1: -The two joined amino acids are called a dipeptide. The amide bond is synthesized when the carboxyl group of one amino acid molecule reacts with the amino group of the other amino acid molecule, causing the release of a molecule of water (H2O), hence the process is a dehydration synthesis reaction.

Detailed explanation-2: -A peptide bond is formed between the carboxyl group of amino acid 1, and the amino group of amino acid 2. An OH (hydroxyl group) is removed from amino acid 1. A hydrogen (H) is removed from amino acid 2, to form water. The result is a C-N bond to link the two amino acids together, to form a dipeptide.

Detailed explanation-3: -Each amino acid is attached to another amino acid by a covalent bond, known as a peptide bond. When two amino acids are covalently attached by a peptide bond, the carboxyl group of one amino acid and the amino group of the incoming amino acid combine and release a molecule of water.

Detailed explanation-4: -Dipeptide contain one peptide bond and two amino acids. Tripeptides contain two peptide bonds and three amino acids.

Detailed explanation-5: -Peptide bond: A covalent bond joining the -amino group of one amino acid to the carboxyl group of another with the loss of a water molecule.