CourseCourseConceptConceptDocsDocuments

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

Practise IB Biology SL A1.2.7 by distinguishing DNA and RNA through sugars, bases, strand structure and codon evidence in diagrams.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Distinguish DNA from RNA by strand organization and typical molecule length: DNA is usually double-stranded and longer, whereas RNA is usually single-stranded and shorter.
  • Distinguish DNA and RNA nucleotides by pentose and base composition: deoxyribose/thymine versus ribose/uracil.
  • Identify whether a nucleic-acid diagram or sequence is DNA or RNA from strand structure and the presence of thymine or uracil.

Learn this topic

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

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

[Maximum number: 2]

State two differences between RNA and DNA nucleotides.

All question bank results loaded