The interaction of nucleic acids and proteins plays the most important role in the formation of living cells.

Why nucleic acids + proteins are key

  • Nucleic acids (DNA and RNA) store and transmit genetic information, which contains the instructions for building all the proteins in a cell.
  • Proteins carry out most cell functions (acting as enzymes, structural components, transporters, and signaling molecules) and are built according to the information in nucleic acids.
  • The flow of information DNA → RNA → protein (often called the “central dogma”) explains how genetic information becomes functional cell structures.

So, when a multiple-choice question asks:

“The interaction of which of the following macromolecules plays an important role in the formation of living cells?”

the best answer is:
The interaction between nucleic acids and proteins.