Question: what is the relationship between nucleotide and a molecule of nucleic acid?
Answer: So you can call DNA a large polymer of nucleotides. Each nucleotide is made of a Phosphate group (PO4), a sugar called Deoxyribose (which is why DNA is called Deoxyribonucleic Acid) and any one of the four Nitrogen bases Adenine (A), (Guanine), Thymine(T) and Cytosine (C).