A large class of molecules is called a macromolecule.
The relationship between the food we eat and the energy in our bodies is that food is converted to energy and without food we will not have energy, I think hopes this helped you out a little.
The amino acids are the building blocks of the proteins.
Explanation:
The amino acids are the organic molecules made up of a carboxylic group, an amino group and a carbon side chain. The proteins are macromolecules, made up of amino acids. Many amino acids combine to form a protein. The structure of the protein depends on the sequence of the amino acids present in the structure of protein. A different protein has a different sequence of amino acids.
