The table shows the response of isolated tissues to adrenaline. A higher value indicates greater activity.
Table
| Tissue | Without adrenaline | With adrenaline |
|---|---|---|
| P | 10 | 10 |
| Q | 10 | 24 |
All other conditions are controlled.
Which conclusion is justified?
Q responds to adrenaline under the conditions tested.
P destroys adrenaline under the conditions tested.
P responds to adrenaline under the conditions tested.
Q produces adrenaline under the conditions tested.
42 exam-style questions on Edexcel GCSE Biology 7.1 Hormones and coordination, covering 7.1.1 Endocrine glands and hormone transport, 7.1.2 Adrenalin and fight or flight, and 7.1.3 Thyroxine and negative feedback. Each one has a worked solution and a mark scheme showing where the marks go.