Living organisms are made up of several organic macromolecules known as biological polymers. For these macromolecules, mark the true statement. * 1 point DNA and RNA molecules are formed by the same nitrogenous bases. Nucleic acids are polymers of monosaccharides with structural functions. Starch and cellulose are proteins used by our bodies as a source of energy. Lipids are compounds formed by fatty acids, which can play important roles as digestive enzymes. Proteins are polymers of amino acids joined by peptide bonds and that can play mainly enzymatic and structural functions.