Biology 9700 · 11 Immunity
11.1 The immune system
Describe phagocytosis, distinguish self from non-self antigens, and explain primary and secondary immune responses involving B- and T-lymphocytes.
- Questions
- 206
- Years
- 2003–2026
- Multiple choice
- 153
- Written answer
- 53
- Average marks
- 3.8
Where this subtopic appears
- Paper 1variants 01, 11, 12, 13, 14153
- Paper 2variants 02, 21, 22, 2347
- Paper 4variants 42, 435
- Paper 3variants 351
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 2 | 8 | – | 10 |
| 2025 | – | 7 | 5 | 12 |
| 2023 | 1 | 8 | 5 | 14 |
| 2022 | 1 | 8 | 6 | 15 |
| 2021 | 2 | 6 | 8 | 16 |
| 2020 | 4 | 8 | 7 | 19 |
| 2019 | 3 | 7 | 8 | 18 |
| 2018 | 2 | 5 | 8 | 15 |
| 2017 | 2 | 6 | 4 | 12 |
| 2016 | 2 | 7 | 10 | 19 |
| 2015 | – | 7 | 5 | 12 |
| 2011 | – | 2 | – | 2 |
| 2010 | – | 7 | 9 | 16 |
| 2009 | – | 3 | 5 | 8 |
| 2008 | – | – | 1 | 1 |
| 2007 | – | – | 1 | 1 |
| 2006 | – | 1 | 3 | 4 |
| 2005 | – | 2 | 2 | 4 |
| 2004 | – | 3 | 2 | 5 |
| 2003 | – | 1 | 2 | 3 |
