A researcher places photosynthetic algae in a transparent chamber in bright light. Oxygen released by the algae collects in a gas syringe.
The table shows the gas syringe readings.
| Time in minutes | Gas syringe reading in cm3\text{cm}^3cm3 |
|---|---|
| 3 | 1.6 |
| 15 | 8.8 |
Calculate the mean rate of photosynthesis between 3 minutes and 15 minutes.
Give your answer in cm3 min−1\text{cm}^3\ \text{min}^{-1}cm3 min−1.
Show your working.
117 exam-style questions on OCR GCSE Biology 1.4 Photosynthesis, covering 1.4.1 Photosynthesisers as biomass producers, 1.4.2 Factors affecting the rate of photosynthesis, and 1.4.3 Limiting factors in photosynthesis. Each one has a worked solution and a mark scheme showing where the marks go.