A person infected with the measles virus makes antibodies against it. These antibodies give the person no protection against the mumps virus. Why?
Each antibody has a shape that fits only one type of antigen
Each antibody is used up as soon as it meets a single pathogen
Each antibody is made by only one type of white blood cell
Each antibody is destroyed by the toxins that a virus releases
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.