A group of ten athletes complete a desert ultramarathon. Medical researchers at the finish line record the core body temperature of each participant.
| Runner | Core body temperature (∘C^\circ\text{C}∘C) |
|---|---|
| 1 | 38.8 |
| 2 | 39.2 |
| 3 | 38.9 |
| 4 | 39.1 |
| 5 | 38.7 |
| 6 | 39.0 |
| 7 | 38.9 |
| 8 | 39.3 |
| 9 | 38.8 |
| 10 | 39.1 |
Calculate the mean core body temperature of the ten runners. Give your answer to 1 decimal place.
If a runner's core body temperature is strictly above 39.0∘C39.0^\circ\text{C}39.0∘C, they are classified as hyperthermic. What percentage of the runners would be classified as hyperthermic?
22 exam-style questions on OCR GCSE Biology 3.3 Maintaining internal environments, covering 3.3.1 Importance of a constant internal environment, 3.3.2 The skin and body temperature, 3.3.3 Insulin and blood sugar, 3.3.4 Glucagon and blood sugar, 3.3.5 Type 1 and type 2 diabetes, 3.3.6 Osmotic changes in body fluids, 3.3.7 Kidneys and water balance, 3.3.8 Structure of the kidney and tubule, 3.3.9 ADH and kidney tubule permeability, and 3.3.10 Responses to temperature and osmotic challenges. Each one has a worked solution and a mark scheme showing where the marks go.