Two groups of cells are placed in separate dishes containing the same concentration of hormone X. Group P responds, but group Q does not. Both groups are alive.
Which further result would best explain the difference?
Receptors for X occur on neither group.
Receptors for X occur on both groups.
Receptors for X occur on Q only.
Receptors for X occur on P only.
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.