Question

the model shows the chemical structure of a molecule. this molecule is a building block of which type of biomolecule? carbohydrate protein lipid nucleic acid

Explanation:

The molecule shown has an amino group (-NH₂), a carboxyl group (-COOH), and a side - chain. These are the characteristic features of an amino acid. Amino acids are the building blocks of proteins. Carbohydrates are made of monosaccharides, lipids have fatty acids and glycerol as building blocks, and nucleic acids are made of nucleotides.

Answer:

protein