A scientist studies three cell cultures. Cultures P and Q contain rabbit leg-muscle cells. Culture R contains mushroom cells.
Each culture supplies ATP at a rate of 12.0 μmol min−112.0\,\mu\text{mol min}^{-1}12.0μmol min−1.
| Culture | Oxygen condition | Rate of glucose use (μmol min−1\mu\text{mol min}^{-1}μmol min−1) |
|---|---|---|
| P | Enough oxygen reaches the cells | 0.40 |
| Q | Oxygen is used faster than it reaches the cells | 6.0 |
| R | No oxygen reaches the cells | 6.0 |
Compare respiration in cultures P, Q and R.
Use the information in the table to explain the different rates of glucose use and predict the rate of glucose use in culture Q if enough oxygen reached its cells. Assume that the rate of ATP supply stays the same.
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.