Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by:

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by:
  1. base-sugar-phosphate
  2. base-sugar-OH
  3. (base-sugar-phosphate).
  4. sugar-phosphate.

Solution

Each nucleotide consists of, (i) a nitrogenous heterocyclic base which may be purine or pyrimidine. (ii) sugar: deoxyribose (iii) phosphate Related Theory Nucleoside $=$ sugar + base (via glycosidic bond) Nucleotide $=$ Nucleoside + phosphate (via phosphodiester bond) A Caution $\rightarrow$ Nucleosides are the structural subunit of nucleic acids such as DNA and RNA Nucleotides are building blocks of nucleic acids DNA and RNA.

Asked in: NEET 2005

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