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      Question

      Which of the following is not true about

      DNA?
      A Nitrogen bases are 0.34 nm apart on a DNA strand Correct Answer Incorrect Answer
      B The double helix is 2.5 nm wide Correct Answer Incorrect Answer
      C The double helix is 3.4 nm long Correct Answer Incorrect Answer
      D A pairs with T and G pairs with C Correct Answer Incorrect Answer

      Solution

      The cross section of the DNA molecule is 2-nm wide.

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