A control system helps keep an internal condition of an organism close to its optimum level. It contains cell P, a coordination centre and component Q. Scientists prevented one component from working and recorded the results.
| Component prevented from working | Information from cell P reaches the coordination centre | The internal condition moves towards its optimum level |
|---|---|---|
| None | Yes | Yes |
| Cell P | No | No |
| Component Q | Yes | No |
Use the results in the table to explain the roles of cell P and component Q in this control system. Predict what would happen to the internal condition if the coordination centre stopped working, and explain your prediction.
76 exam-style questions on AQA GCSE Biology 5.1 Homeostasis, covering 5.1 Homeostasis. Each one has a worked solution and a mark scheme showing where the marks go.