Biology 9700 · 12 Energy and respiration
12.1 Energy
Explain the need for energy, ATP's role as energy currency, substrate energy values, respiratory quotients, and respirometer investigations.
- Questions
- 63
- Years
- 2004–2026
- Multiple choice
- 24
- Written answer
- 39
- Average marks
- 8
Practise energy and respiration questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 4variants 04, 41, 42, 4329
- Paper 1variants 01, 11, 12, 13, 1424
- Paper 2variants 21, 22, 235
- Paper 5variants 52, 535
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 1 | 4 | – | 5 |
| 2025 | – | – | 1 | 1 |
| 2023 | – | 2 | 2 | 4 |
| 2022 | 1 | 4 | – | 5 |
| 2021 | – | 3 | 1 | 4 |
| 2020 | – | 5 | 1 | 6 |
| 2019 | – | 2 | 2 | 4 |
| 2018 | 1 | 2 | 2 | 5 |
| 2017 | 1 | – | 1 | 2 |
| 2016 | 2 | – | 1 | 3 |
| 2015 | – | 5 | 3 | 8 |
| 2010 | – | 1 | 5 | 6 |
| 2009 | – | – | 2 | 2 |
| 2008 | – | 1 | 2 | 3 |
| 2006 | – | – | 2 | 2 |
| 2005 | – | 1 | 1 | 2 |
| 2004 | – | 1 | – | 1 |
