Question
Nucleotide are building blocks of nucleic acids, nucleotide is a composite molecule formed by
(base-sugar-phosphate)n
base-sugar-OH
base-sugar-phosphate
sugar-phosphate
Solution
C.
base-sugar-phosphate
Nucleotides are the building blocks of nucleic acids (DNA/ RNA). A single nucleotide comprises of-
(i) phosphate molecule
(ii) a five carbon sugar (either ribose or deoxyribose)
(iii) a purine (adenine or guanine) or a pyrimidine (thymine or cytosine or uracil) nitrogenous base.
Nucleoside = Base + Sugar
Nucleotide = Base + Sugar + Phosphate
