Answer:
Nucleotides are the building blocks of DNA and RNA.
A nucleotide is mainly composed of Three Chemical components-
1) Nitrogenous base
2) Phosphate Group
3) Pentose Sugar
Explanation:
1) Nitrogenous base
There are four kinds of Nitrogenous bases.
a) Adenine (A)
b) Thymine (T)
c) cytosine (C)
d) guanine (G)
2) Phosphate Group
It is group in which one Phosphorus atom is bonded to four oxygen atom.
3) Pentose Sugar
It is a type of sugar which contains 5 carbon atoms.