Question

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

Explanation:

The molecule shown has a long - chain hydrocarbon with a carboxyl group (-COOH) at one end, which is characteristic of a fatty acid. Fatty acids are building blocks of lipids. Carbohydrates have a general formula of (CH₂O)ₙ and characteristic ring - like or linear structures with multiple hydroxyl groups. Proteins are made up of amino acids which have an amino group (-NH₂), a carboxyl group (-COOH) and a side - chain (R - group) attached to a central carbon. Nucleic acids are composed of nucleotides with a sugar, a phosphate group and a nitrogenous base.

Answer:

C. lipid