A conservation team vaccinates a group of captive badgers. Later, the badgers are exposed to the same pathogen. The table shows the antibody response recorded in one badger.
| Event | Day antibodies first detected | Peak antibody concentration (arbitrary units) |
|---|---|---|
| After vaccination | 5 | 40 |
| After later exposure to the same pathogen | 1 | 120 |
Compare the antibody responses after vaccination and after later exposure to the same pathogen. Explain the difference.
252 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.