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 a phosphate group, a pentose sugar (ribose or deoxyribose), and a nitrogen - containing base. These are the components of a nucleotide. Nucleotides are the building blocks of nucleic acids (DNA and RNA). Carbohydrates are made of monosaccharides (e.g., glucose), proteins are made of amino acids, and lipids have components like fatty acids and glycerol.

Answer:

nucleic acid