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IB Biology HL A1.2.7 Differences Between Dna and Rna Questions

Practise IB Biology HL A1.2.7 by comparing strand structure, sugars and bases, then identifying nucleic acids from molecular evidence.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Distinguish DNA from RNA using strand number and typical molecule length, with DNA usually double-stranded and RNA usually single-stranded and shorter.
  • Distinguish DNA and RNA by their pentose sugars and bases: deoxyribose/thymine versus ribose/uracil, then identify the nucleic acid in a representation.

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Study A1.2.7—Differences between DNA and RNA conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL A1.2.7 Differences Between Dna and Rna Questions question 1

[Maximum number: 1]

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

Figure for Question IB Biology HL A1.2.7 Differences Between Dna and Rna Questions question 1 — IB Biology HL

Identify the type of nucleic acid shown in the diagram.

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