Cells from three organisms are placed in nutrient solutions containing glucose. The oxygen supply is controlled as shown.
| Culture | Cells | Oxygen condition |
|---|---|---|
| G | liver cells from a trout | oxygen available |
| H | skeletal muscle cells from a frog | no oxygen |
| J | root cells from a bean plant | no oxygen |
Which statement correctly predicts both the products formed and the extent to which glucose is broken down?
G forms carbon dioxide and water by complete breakdown; H forms ethanol and carbon dioxide and J forms lactic acid by incomplete breakdown
G forms ethanol and carbon dioxide by incomplete breakdown; H forms lactic acid by incomplete breakdown and J forms carbon dioxide and water by complete breakdown
G forms carbon dioxide and water by incomplete breakdown; H forms lactic acid and J forms ethanol and carbon dioxide by complete breakdown
G forms carbon dioxide and water by complete breakdown; H forms lactic acid and J forms ethanol and carbon dioxide by incomplete breakdown
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.