Sentence:  Will advances in human sciences help us build social structures and governments which will enable us to cope with people as effectively as the primitive combination of protein and <WSD>nucleic</WSD> acid built a structure of molecules which enabled it to adapt to a sea of molecular interaction ? 
Meaning of the word marked with <WSD> tags:  (biochemistry) any of various macromolecules composed of nucleotide chains that are vital constituents of all living cells