The table shows the concentration of one antibody in a person's blood after a first injection of a vaccine and after a second injection of the same vaccine.
Table: The concentration of one antibody in the blood at four times after a first injection and after a second injection of the same vaccine
| Time after injection (days) | Antibody concentration after the first injection (arbitrary units) | Antibody concentration after the second injection (arbitrary units) |
|---|---|---|
| 0 | 0 | 2 |
| 5 | 1 | 28 |
| 10 | 6 | 45 |
| 20 | 4 | 38 |
Which conclusion about the second injection is supported by the data?
Antibody is produced more slowly, and a lower concentration is reached
Antibody is produced more quickly, and a lower concentration is reached
Antibody is produced at the same rate, and a higher concentration is reached
Antibody is produced more quickly, and a higher concentration is reached
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.