14. a structure with a chain of carbons and hydrogens with a cooh at the end will represent which of
the following macromolecules:
a. protein b. lipid c. carbohydrate d. nucleic acid

The correct answer is a Protein

Explanation:

Proteins are macromolecules consisting of amino acids which are joined by peptide bonds.

         Protein molecule has two ends,  amino(-NH2) group is present at one end that is known as amino terminal end or N terminal end whereas carboxyl group is present at the another end that is called carboxy terminal end or C terminal end.

the correct answer is c   with the systems