The Structural Stability of the Double Helix of DNA Is

question 35

Multiple Choice

The structural stability of the double helix of DNA is ascribed in part to

• A) hydrogen bonding between adjacent purine bases.
• B) ionic bonding between stacked purine and pyrimidine nuclei.
• C) hydrogen bonding between adjacent pyrimidine bases.
• D) the helical structure of the molecule.
• E) hydrogen bonding between purine and pyrimidine bases.

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