. What are the components of a nucleotide?


Best Answer

Explanation

  • Nucleotides are the building blocks of DNA that comprise a nucleoside associated or linked to a phosphate group.
  • A nucleoside further comprises a nucleobase and five-carbon sugars. The five-carbon sugars in a nucleotide are ‌ribose or deoxyribose.
  • A nucleotide is a nitrogen-containing molecule and includes adenine (A), Guanine (G), and cytosine (C), common to both DNA and RNA. Thymine (T) is present only in DNA and Uracil (U) is present only in RNA in place of thymine.
  • Thus, the components of a nucleotide include a sugar molecule (ribose sugar in RNA or deoxyribose in DNA), a phosphate molecule, and a nitrogen base.

Nucleotide= Nucleoside (base and sugar) + phosphate molecule

phosphate

Final Answer

The main components of a nucleotide are pentose sugar, a nitrogenous base and a phosphate group

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