May/June 2026 Paper 13

2026 · 40 questions · 40 parts · 40 marks

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38Immune System DefencesHard1 mark
The electron micrograph shows a human white blood cell and a few bacterial cells.
Electron micrograph of a human white blood cell (a large irregularly shaped cell, labelled 'white blood cell') that has engulfed several rod-shaped bacterial cells; two leader lines labelled 'bacterial cells' point to bacteria visible inside the white blood cell.
Which statement describes how this white blood cell acts on the bacterial cells?