A researcher grows cells from a mould fungus in two samples. Both samples are supplied with glucose. Sample P has enough oxygen, while sample Q has no oxygen.
| Sample | Mean number of ATP molecules made per glucose molecule |
|---|---|
| P | 30 |
| Q | 2 |
The cells in sample P use 24 glucose molecules.
Calculate how many glucose molecules the cells in sample Q would need to use to make the same total number of ATP molecules as the cells in sample P.
Explain why the ATP yield per glucose molecule is lower in sample Q and predict the two products formed.
98 exam-style questions on Edexcel GCSE Biology 8.3 Respiration, covering 8.3.1 Aerobic and anaerobic respiration. Each one has a worked solution and a mark scheme showing where the marks go.