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Pearson Edexcel GCSE (9-1) Biology practice

Which of the following best describes the overall structure of a DNA molecule?

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practice

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Topic

Genetics

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Which of the following best describes the overall structure of a DNA molecule?.

  1. A.A single, straight chain of nucleotides
  2. B.A triple helix of phosphate and sugar units
  3. C.Two strands coiled to form a double helix
  4. D.A linear arrangement of amino acids

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Which of the following best describes the overall structure of a DNA molecule? | Edexcel Biology | ExamCompanion