Answer:
Nucleic acids are of two types DNA and RNA which are made up of monomeric units called nucleotides.
One monomer is one nucleotide which further consists of three parts:
1: Nitrogenous base
2: Sugar (a ribose sugar in RNA and a deoxyribose sugar in DNA)
3: Phosphate group
Explanation:
If we talk about single strand of nucleic acid DNA or RNA, there is a phosphodiester linkage that holds monomers together in a strand of nucleic acids. This phospho di ester linkage is formed when a condensation reaction occurs between a hydroxyl group of two sugars and a phosphate group.
You can see a better representation in attached figure.
Hope it help!
