IB Biology HL 2.1.7 Phases of mitosis and spindle mechanics Question Bank
Practise IB Biology HL 2.1.7 by analysing mitotic phases, spindle mechanics and chromosome movement.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Analyse chromosome and spindle events to identify a mitotic phase and justify the diagnosis.
- Explain how spindle formation and chromatid migration produce genetically equivalent nuclei.
- Evaluate a mitosis diagram by checking chromosome position, condensation and nuclear re-formation.
D2.1.7—Phases of mitosis question 1
[Maximum number: 2]
Describe what happens to the membranes of an animal cell during mitosis.
a nuclear membrane breaks down/disappears (in prophase/at start of mitosis);
b nuclear membrane reforms around two new nuclei (in telophase/at end of mitosis);
c plasma membrane pulled inwards at equator / cleavage furrow formed;
d membrane pinches apart to form two cells / cytoplasm divided / cytokinesis;
2 max
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