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Inga [223]
1 year ago
12

The monomer of DNA is composed of what three parts

Biology
1 answer:
matrenka [14]1 year ago
6 0

A monomer of DNA is composed of nitrogenous base, a pentose sugar and a phosphate group.

<h3>What is the composition of DNA?</h3>
  • A DNA molecule is made up of several repeating units called nucleotides.
  • Each nucleotide is made up of 3 parts: base, sugar and phosphate.
  • Nitrogen bases are cyclic carbon compounds and are of two types: Purines (Adenine and Guanine) and Pyrimidines (Cytosine and Thymidine).
  • Purines bond with pyrimidines to form double helix of DNA.
  • The sugar has pentose structure and is deoxyribose as it lacks 2’- OH group.
  • The 1’ Carbon of sugar is attached to the 9’ nitrogen of purine or 1’ nitrogen of pyrimidine by glycosidic bond.
  • The 5’ carbon of sugar is attached to phosphate group.
  • The phosphate group is pentavalent with a double bonded oxygen and three single bond hydroxyl molecules.

Learn about genetic material here:

brainly.com/question/996038

#SPJ1

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