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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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