The two main types of nucleic acid found in cells are RNA and:

1. Nucleic acids are the information-carrying polymers of the cell. 2. There are two main types, deoxyribonucleic acid and ribonucleic acid. 3. Alongside RNA, the other is DNA. 4. ATP, NAD and GTP are single nucleotides or derivatives, not nucleic acid polymers. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 3 'Biological Macromolecules', sections 3.1-3.5_