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IB Biology SL A2.2.9 Atypical Cell Structure Questions

Practise IB Biology SL A2.2.9 by explaining why red blood cells, sieve tubes, muscle fibres and aseptate hyphae are atypical cell structures.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Identify atypical structures such as striated muscle fibres, aseptate hyphae, sieve tubes and mature red blood cells.
  • Explain how multiple nuclei, absent nuclei or unusual compartmentalization challenge simple cell-theory expectations.
  • Use observations from atypical cells to distinguish structural exceptions from ordinary eukaryotic cells.

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Study A2.2.9—Atypical cell structure conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology SL A2.2.9 Atypical Cell Structure Questions question 1

[Maximum number: 1]

The diagram shows the structure of part of a fungus.

Figure for Question IB Biology SL A2.2.9 Atypical Cell Structure Questions question 1 — IB Biology SL

Identify one feature of the fungus that is atypical of cell structure.

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