Proteins are made up of chemical compounds known as: amino acids fats carbohydrates enzymes

Answer;

Amino acids

Explanation;Amino acids are the building blocks of proteins.Proteins are among the four basic biomolecules, others being, carbohydrates, lipids, and nucleic acids.Proteins are complex, organic compounds composed of many amino acids linked together through peptide bonds and cross-linked between chains by sulfhydryl bonds, hydrogen bonds and van der Waals forces.

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the  pharynx, the  larynx, enters the  trachea, moves through the  bronchi  andbronchioles  till the alveoli.