7. Describe the functional properties of amino acids and peptides. i. e. acid-base, amphoteric, hydroxy, aromatic, sulfur, polar, non-polar, branched, linear, solubility, zwitterionic, amphoteric, isomeric (D and L) nature of amino acids;

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8