Biology 9700 · AS & A Level · Structure of nucleic acids and replication of DNA

Structure of nucleic acids and replication of DNA — practice question

Which row gives the correct description of adenine?

  • Acomplementary base: thymine; component on nucleotide strand it is attached to: deoxyribose; ring structure: double
  • Bcomplementary base: thymine; component on nucleotide strand it is attached to: phosphate; ring structure: single
  • Ccomplementary base: uracil; component on nucleotide strand it is attached to: phosphate; ring structure: double
  • Dcomplementary base: uracil; component on nucleotide strand it is attached to: ribose; ring structure: single

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