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

16. The dynamic force that stabilizes the double helix by stacking the hydrophobic nitrogenous bases on top of one another belongs to

A. Covalent interactions
B. Hydrophobic interactions and van der Waals forces
✓
C. Electrostatic ionic bridges
D. Disulfide linkages

📝 Explanation

While hydrogen bonds hold the pairs together horizontally, vertical base-stacking interactions insulate the hydrophobic bases from water.

📖 Additional Information

  • Covalent interactions
  • Hydrophobic interactions and van der Waals forces
  • Electrostatic ionic bridges
  • Disulfide linkages

While hydrogen bonds hold the pairs together horizontally, vertical base-stacking interactions insulate the hydrophobic bases from water.

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