Which base is not present in the $DNA$ structure?

  • A
    Adenine
  • B
    Uracil
  • C
    Guanine
  • D
    Cytosine

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Which of the following statements about the assembly of nucleotides in a molecule of deoxyribose nucleic acid $(DNA)$ is correct?

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Which nitrogen atom of a purine base is bonded with the furanose sugar to form a nucleoside?

What is the unit consisting of a base,sugar,and phosphate in nucleic acids called?

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