Question

the model shows the chemical structure of a molecule. h h o h—n—c—c—oh ch₃ oh this molecule is a building block of which type of biomolecule? carbohydrate protein lipid nucleic acid

Explanation:

The molecule shown has an amino - group ($-NH_2$), a carboxyl - group ($-COOH$) and a side - chain, which are characteristic features of an amino acid. Amino acids are the building blocks of proteins. Carbohydrates are made of monosaccharides, lipids are made of fatty acids and glycerol, and nucleic acids are made of nucleotides.

Answer:

B. protein