1.
 Amino acids are molecules that
combine to form proteins. Amino
acids and proteins are the building
blocks of life.
 When proteins are digested or
broken down, amino acids are left.
 Amino acids can also be used as a
source of energy by the body.

2.
 The sequence makes the protein
take different shapes and have
different functions in your body
 are organic compounds that
contain both amino and carboxylic
acid functional groups.
 alpha-amino acids, which
comprise proteins