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IB Biology HL D1.2.15 Hl Post Transcriptional Modification Questions

Explore how eukaryotic pre-mRNA is spliced and capped before mature mRNA is exported for translation in IB Biology HL D1.2.15.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify eukaryotic pre-mRNA as containing introns and exons immediately after transcription.
  • Explain that splicing removes introns and joins exons to form mature mRNA.
  • Identify addition of a 5′ cap and 3′ poly-A tail as post-transcriptional mRNA modifications before export.

IB Biology HL D1.2.15 Hl Post Transcriptional Modification Questions question 1

[Maximum number: 1]

What happens to mRNA after transcription in eukaryotic cells?

A

Binding to the large subunit of the ribosome

B

Removal of introns

C

Addition of exons

D

Attachment of an amino acid

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