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IB Biology SL A2.2.5 Prokaryote Cell Structure Questions

Practise IB Biology SL A2.2.5 by identifying prokaryote structures and comparing circular DNA, plasmids, pili, flagella and cell walls with eukaryotes.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Identify and label the cell wall, plasma membrane, cytoplasm, nucleoid, plasmids, pili and flagella in a prokaryotic cell.
  • Compare naked circular prokaryotic DNA and chromosomes with linear, histone-associated eukaryotic chromosomes.
  • Explain how prokaryotic structures such as pili, flagella, ribosomes and plasmids support cell functions or gene transfer.
  • Describe or distinguish bacterial cell-wall structure, including Gram-positive and Gram-negative layers, where shown.

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Study A2.2.5—Prokaryote cell structure conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology SL A2.2.5 Prokaryote Cell Structure Questions question 1

[Maximum number: 3]

Tuberculosis (TB) is an infectious disease caused by the bacterium Mycobacterium tuberculosis.

Outline the structures in M. tuberculosis that are not present in a human cell.

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