Question

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 but not proteins? a fatty acid chain a phosphorus an r group a nitrogen

Explanation:

Nucleic acids are composed of nucleotides which contain a phosphate group with phosphorus. Proteins are made of amino - acids and do not have phosphorus as a characteristic component like nucleic acids. Fatty acid chains are in lipids, R - groups are in amino - acids (proteins), and both proteins and nucleic acids contain nitrogen.

Answer:

B. a phosphorus