Biology 9700 · 8 Transport in mammals
8.2 Transport of oxygen and carbon dioxide
Explain oxygen and carbon dioxide transport, including the roles of haemoglobin, the chloride shift, dissociation curves, and the Bohr effect.
- Questions
- 235
- Years
- 2003–2026
- Multiple choice
- 185
- Written answer
- 50
- Average marks
- 3.1
Practise transport in mammals questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 01, 11, 12, 13, 14185
- Paper 2variants 02, 21, 22, 23, 2447
- Paper 4variants 41, 42, 433
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 2 | 12 | – | 14 |
| 2025 | – | 5 | 6 | 11 |
| 2023 | 3 | 8 | 8 | 19 |
| 2022 | 1 | 6 | 6 | 13 |
| 2021 | 4 | 11 | 10 | 25 |
| 2020 | 2 | 9 | 8 | 19 |
| 2019 | 5 | 11 | 9 | 25 |
| 2018 | 3 | 10 | 8 | 21 |
| 2017 | 2 | 8 | 6 | 16 |
| 2016 | 3 | 12 | 11 | 26 |
| 2015 | – | 9 | 9 | 18 |
| 2011 | – | 4 | – | 4 |
| 2010 | – | – | 6 | 6 |
| 2009 | – | 3 | 2 | 5 |
| 2008 | – | 1 | 1 | 2 |
| 2007 | – | – | 1 | 1 |
| 2006 | – | 1 | 2 | 3 |
| 2005 | – | 1 | 1 | 2 |
| 2004 | – | 2 | – | 2 |
| 2003 | – | 2 | 1 | 3 |
