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      Question

      Which component forms the backbone of a DNA molecule?

      A Phosphate group Correct Answer Incorrect Answer
      B Nitrogenous base Correct Answer Incorrect Answer
      C Sugar molecule Correct Answer Incorrect Answer
      D Hydrogen bonds Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      The phosphate groups in nucleotides form the backbone of the DNA molecule. They link the sugar molecules together, creating a sturdy structure for the DNA double helix.

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