DNA molecule is double stranded, in which two chains of DNA are twisted around each other by:
Correct answer: A. Hydrogen bonds
- A. Hydrogen bonds
- B. Vander Waal's force
- C. Covalent bonds
- D. Dative bonds
Explanation
The 2 chains of nucleotides forming the DNA molecule are connected together and twisted around by hydrogen bonds between the 2 chains.
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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