A technician mixes equal amounts of a protease made in the lining of the small intestine with protein in four buffer solutions. The temperature and all other conditions are kept the same. The table shows the pH of each buffer. Which buffer is expected to give the shortest time for the protein to be digested?
| Buffer | pH |
|---|---|
| A | 3.0 |
| B | 5.5 |
| C | 7.0 |
| D | 8.0 |
Buffer C
Buffer D
Buffer B
Buffer A
304 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.