Explain5 marksStandard
A student investigated the effect of temperature on the rate of aerobic respiration in yeast using the redox indicator DCPIP. Yeast suspensions were mixed with glucose solution and DCPIP, then incubated at different temperatures. The time taken for the DCPIP to become colourless was recorded.
| Temperature (°C) | Time for DCPIP to become colourless (minutes) |
|---|---|
| 10 | 32 |
| 20 | 16 |
| 30 | 8 |
| 40 | 11 |
| 50 | 38 |
Explain these results in terms of the stages of aerobic respiration and the effect of temperature.