C3.2.5—Phagocytes Topic Practice
C3.2.5—Phagocytes Topic Practice

IB Biology syllabusBiology SL/HLFirst assessment 2025
Practise how phagocytes defend against disease by moving into tissues, engulfing pathogens and killing material inside vesicles.
How this is tested
- describe how phagocytes engulf pathogens by membrane movement and vesicle formation
- explain that phagocytes can leave capillaries and enter infected tissues
- distinguish phagocyte actions from antibody production by lymphocytes
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