The following is NOT a nucleic acid is - d. protein as it is a different macronutrient or macromolecule to nucleic acid.
Nucleic acids are macromolecules of a special class found in all living organisms and also in viruses. There are two types of major nucleic acids, DNA or deoxyribose nucleic acid and RNA or ribose nucleic acid.
- Nucleic acids play a role in genetic material
- nucleic acid helps in protein synthesis
- RNA is mainly three types mRNA, messenger RNA, tRNA transfer RNA, and rRNA ribosomal RNA.
- DNA is normally double-stranded
Protein on other hand is a different class of macromolecules that perform many roles in the cell such as, structure, function, and regulation.
Thus, the correct answer is - D. protein.
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