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 is an amino acid. Amino acids are the building blocks of proteins. Carbohydrates are made of monosaccharides (e.g., glucose). Lipids have components like fatty acids and glycerol. Nucleic acids are made of nucleotides (with a sugar, phosphate, and nitrogen - containing base).

Answer:

protein