Answer
The answer is attached below.
Work Step by Step
When two amino acids join together by a process called condensation, it results in the removal of a water molecule. It forms a dipeptide and the resulting bond is called a peptide bond.
Serine, Alanine, Leucine, and Cysteine are the four amino acids joins together to form a tetrapeptide. To form peptide bonds between them, three water molecules are removed.