Multiple choice

Each strand of DNA has a typical structure. Which of the following statements correctly explains its structure?

  1. The sugar-phosphate chain on the outside and the bases on the inside are held together by weak hydrogen bonds.

  2. The sugar-phosphate chain on the inside and the bases on the outside are held together by weak hydrogen bonds.

  3. The sugar-phosphate chain on the outside and the bases on the inside are held together by strong hydrogen bonds.

  4. The sugar-phosphate chain on the inside and the bases on the outside are held together by strong hydrogen bonds.

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Yes, it is correct. 

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