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BIO NMDCAT Structure of DNA
nmdcat.online July 3, 2026

8. The chemical linkage that holds the sugar-phosphate backbone of a single DNA strand together is the

A. Hydrogen bond
B. Phosphodiester bond
✓
C. Peptide bond
D. Glycosidic bond

📝 Explanation

Phosphodiester bonds covalently link the 3' carbon of one deoxyribose sugar to the 5' carbon of the adjacent sugar via a phosphate group.

📖 Additional Information

  • Hydrogen bond
  • Phosphodiester bond
  • Peptide bond
  • Glycosidic bond

Phosphodiester bonds covalently link the 3' carbon of one deoxyribose sugar to the 5' carbon of the adjacent sugar via a phosphate group.

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