Researchers investigate respiration in cultures of human muscle cells and yeast cells.
The table shows estimated numbers of glucose and ATP molecules for each culture during the investigation.
| Culture | Cells in culture | Oxygen supply | Glucose molecules broken down | ATP molecules formed |
|---|---|---|---|---|
| P | human muscle cells | sufficient | 80 | 2400 |
| Q | human muscle cells | absent | 200 | 400 |
| R | yeast cells | absent | 150 | 300 |
Compare the respiration taking place in cultures P, Q and R.
Use the information in the table and your knowledge of respiration. Your answer should include the products and the consequences for glucose use if each culture has to supply the same amount of ATP.
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.