IB Biology SL 2.4.5 Osmosis in animal cells Question Bank
Practise IB Biology SL 2.4.5 by predicting how animal cells change in solutions of different concentration.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Predict water movement in animal cells placed in hypotonic or hypertonic solutions.
- Explain how osmosis affects red blood cells and other animal cells.
D2.3.5—Effects on cells without wall question 1
[Maximum number: 1]
Explain a change that would take place in sperm placed in a hypotonic solution.
a. water will enter (by osmosis) causing sperm to swell/enlarge/burst;
b. water will enter (by osmosis) causing sperm to become more mobile as osmolarity decreases;
Marking guidance:
Do not accept turgidity.
Must show movement of water.
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