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IB Biology HL 2.2.7 Free and Bound Ribosomes Question Bank

Practise IB Biology HL 2.2.7 through exact HL questions on free and bound ribosomes, polysomes, protein targeting and secretory pathways.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Analyse how free and bound ribosomes direct proteins to cytoplasmic, secretory or organelle destinations.
  • Use polysome and cell-type evidence to infer protein-production demand and ribosome organisation.
  • Trace a bound-ribosome protein through rough ER and Golgi processing toward its final destination.

B2.2.7 (HL)—Free ribosomes vs. rough ER question 1

[Maximum number: 2]

Outline what happens to the proteins produced by free and bound ribosomes.

Free ribosomes:

Bound ribosomes:

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