which is nucleic acid? Nucleic acid and protein are important macromolecules unique to organisms. The nucleic acid is not only the basic component of all biological cells, but also plays a major role in the growth, development, reproduction, inheritance, and mutation of biological organisms. It is divided into two categories, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), and is formed by the phosphate bonds at the 3 and 5 positions of nucleotides. From this, it can be inferred that the following explanation of "nucleic acid" is incorrect? ['Nucleic acids are important macromolecules unique to organisms, and are the basic components of all biological cells.', 'Nucleic acids are divided into two major types: DNA and RNA. which are connected by the 3 and 5 phosphate bonds of nucleotides.', 'Nucleic acid is a mixture of nucleotides, nucleosides, and bases.', 'Nucleic acid is a substance that dominates major life phenomena of an organism.']