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CAIE A-Level Biology 6.1.1 Nucleotide Structure and ATP

Practise identifying sugar, base and phosphate in nucleotides, distinguishing ribose from deoxyribose at carbon 2′ and recognising ATP as a triphosphate ribonucleotide.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • identify pentose sugar, nitrogenous base and phosphate as nucleotide components
  • distinguish ribose with a 2′ hydroxyl from deoxyribose with hydrogen at carbon 2′
  • describe ATP as adenine, ribose and three phosphate groups rather than a DNA nucleotide

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