question_answer

                Nucleotide are building blocks of nucleic acids, nucleotide is a composite molecule formed by:

A)                                                                                                                                                                                            (base-sugar-phosphate)                              

B)                 base-sugar-OH

C)                 base-sugar-phosphate 

D)                 sugar-phosphate

Correct Answer: C

Solution :

                          Nucleotides are the building blocks of nucleic acids (DNA and UNA). A single nucleotide is composed of a phosphate molecule, a five carbon sugar (either ribose or deoxyribose) and a purine (adenine or guanine) or a pyrimidine (pressure or cytosine or uracil) nitrogenous base.                 Nucleoside = Base + Sugar                 Nucleotide = Base + Sugar + Phosphare