The three parts of a nucleotide are a nitrogenous base, a sugar, and a phosphate group.
Answer:
Sugar, phosphate group and nitrogenous bases
Explanation:
A nucleotide is a monomer or building block of polynucleotide or nucleic acids (RNA and DNA). These two nucleic acids serve as a storage molecule for the genetic material in living organisms. Each nucleotide subunit has a structure composed of:
1. A five-carbon sugar, which can be Deoxyribose or Ribose depending on whether a DNA or RNA molecule is being formed respectively. The difference between the two sugar molecules is the deficiency of a single oxygen (deoxy) in its structure.
2. Phosphate group with the structure PO4 (3-).
3. Nitrogenous bases; which consists of two groups, Purines and Pyrimidines. The Purines are Adenine and Guanine while the Pyrimidines are Cytosine and Thymine (in DNA) or Uracil (in RNA). These bases all have a Nitrogen atom in their structure, hence their name.
