Which description explains how a white blood cell destroys a pathogen by phagocytosis?
It sticks the pathogens together in a clump so they cannot divide
It releases a chemical that counteracts the toxin from the pathogen
It produces a protein that locks onto the surface of the pathogen
It surrounds the pathogen, takes it in and then digests it
176 exam-style questions on AQA GCSE Biology 3.1 Communicable diseases, covering 3.1.1 Communicable (infectious) diseases, 3.1.2 Viral diseases, 3.1.3 Bacterial diseases, 3.1.4 Fungal diseases, 3.1.5 Protist diseases, 3.1.6 Human defence systems, 3.1.7 Vaccination, 3.1.8 Antibiotics and painkillers, and 3.1.9 Discovery and development of drugs. Each one has a worked solution and a mark scheme showing where the marks go.