IB Biology SL C3.2.5 Phagocytes Questions

Explore how phagocytic leucocytes detect infection, leave blood for tissues, engulf pathogens into vacuoles and destroy them with lysosomal enzymes in IB Biology SL C3.2.5.

Exam points

Explain how phagocytes use chemotaxis to leave the bloodstream and reach infected tissues where pathogens or foreign material are detected.
Explain phagocytosis as membrane engulfment into a vacuole followed by lysosomal-enzyme digestion and destruction of the pathogen as a non-specific defence.

Learn this topic

Study C3.2.5—Phagocytes conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

[Maximum number: 2]

The structure of part of the digestive system is shown in the diagram below.

Figure for Question IB Biology SL C3.2.5 Phagocytes Questions question 1 — IB Biology SL

Cells defend the body against pathogens. Outline how some of these cells ingest pathogens in the blood and in body tissues.

All question bank results loaded

Learn this topic

IB Biology SL C3.2.5 Phagocytes Questions question 1