A sealed culture of plant root cells is supplied with glucose and oxygen. Oxygen remains available throughout the investigation. The concentrations are measured at the start and after 15 minutes.
| Substance | Concentration at start / mmol dm−3^{-3}−3 | Concentration after 15 minutes / mmol dm−3^{-3}−3 |
|---|---|---|
| glucose | 6.0 | 5.9 |
| oxygen | 1.2 | 0.6 |
| carbon dioxide | 0.1 | 0.7 |
State the other product of aerobic respiration. Explain how the data support the conclusion that aerobic respiration occurred.
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.