No they're not. A nucleic acid is a polymer of nucleotides (1 nitrogenous base, 1 phosphate group and 1 pentose) bonded together by a phosphodiester bond. The two most famous nucleic acids are RNA...
No, nucleic acids by themselves are simply molecules, however, when they are formed in a specific pattern in the macro-molecule Deoxyribonucleic acid, they are used as a way to build proteins using...