A technician places different numbers of living insect larvae into three identical insulated containers. The larvae are the same species and have similar masses. A fourth identical container is left empty as a control.
Each container starts at 18.0 ∘C18.0\ ^\circ\text{C}18.0 ∘C and is kept in the same room for 2 hours.
| Number of living larvae | Final temperature after 2 hours (∘C^\circ\text{C}∘C) |
|---|---|
| 0 | 18.0 |
| 40 | 18.7 |
| 80 | 19.4 |
| 120 | 20.1 |
Explain the pattern in the results.
The trend in the results continues. Calculate the expected final temperature after 2 hours for a container holding 200 living larvae.
113 exam-style questions on OCR GCSE Biology 1.3 Respiration, covering 1.3.1 Cellular respiration supplies ATP, 1.3.2 Aerobic and anaerobic respiration, 1.3.3 Sugars and carbohydrates, 1.3.4 Amino acids and proteins, and 1.3.5 Fatty acids and lipids. Each one has a worked solution and a mark scheme showing where the marks go.