IB Biology SL 2.2.5 Prokaryote Cell Structure
Practise IB Biology SL 2.2.5 by identifying prokaryote structures, their functions and differences from eukaryotic cells.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Label prokaryote structures such as the nucleoid, plasmids, ribosomes, pili and flagella.
- Explain how prokaryote structures support movement, attachment, protein synthesis and cell survival.
- Compare prokaryote and eukaryote DNA, ribosomes, nuclei and membrane-bound organelles.
A2.2.5—Prokaryote cell structure 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.
a. cell wall
b. pili/flagella
c. 70 S ribosomes
d. nucleoid / circular DNA
OR
naked DNA
e. plasmids
As candidates do not need to know the structure of Mycobacterium tuberculosis, all prokaryotic structures are accepted. Ignore references to membrane bound organelles
3 max
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