Question

question 1 - 14 the four biological macromolecules all contain hydrogen, oxygen and carbon. however, there are distinguishing features of each. which of the following is a characteristic of nucleic acids? a fatty - acid chain a phosphorus an r group a nitrogen

Explanation:

Biological macromolecules like proteins contain nitrogen, while nucleic - acids have a phosphate group. Lipids have fatty - acid chains. An R - group is more characteristic of amino acids (building blocks of proteins). Proteins are unique among the main macromolecules in that they all contain nitrogen in their amino - acid building blocks.

Answer:

a nitrogen