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IB Biology HL A1.2.11 Hl Directionality of Rna and Dna Questions

Practise IB Biology HL A1.2.11 by identifying 5′ and 3′ termini and reading antiparallel strand direction from DNA diagrams.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify the 5′ and 3′ termini of DNA from phosphate, hydroxyl and strand-direction evidence.
  • Read antiparallel DNA strands and assign the correct 5′→3′ direction in a molecular representation.

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Study A1.2.11 (HL)—Directionality of RNA and DNA conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL A1.2.11 Hl Directionality of Rna and Dna Questions question 1

[Maximum number: 1]

The diagram shows a nucleic acid, with some of the bases indicated.

Figure for Question IB Biology HL A1.2.11 Hl Directionality of Rna and Dna Questions question 1 — IB Biology HL

Identify the terminal indicated by Y on the diagram.

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