IB Biology SL 2.2.9 Cell Differentiation and Specialisation
Practise IB Biology SL 2.2.9 by explaining cell-theory exceptions in specialised muscle, fungal and algal structures.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Explain why striated muscle fibres, aseptate hyphae or Acetabularia challenge a simple cell-theory rule.
- Identify atypical cells by their nuclei, compartments or unusual structural organisation.
- Distinguish cell specialisation from an exception caused by missing or multiple nuclei.
A2.2.9—Atypical cell structure question 1
The diagram shows the structure of part of a fungus.
Identify one feature of the fungus that is atypical of cell structure.
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