A drug slows the diffusion of neurotransmitter across synapses. Which change is most likely in a reflex response?
The response takes longer because transmission between neurones is delayed.
The response takes less time because transmission between neurones is accelerated.
The response is stronger because sensory neurones produce more receptor cells.
The response is weaker because motor neurones stop carrying electrical impulses.
40 exam-style questions on AQA GCSE Biology 5.2 The human nervous system, covering 5.2.1 Structure and function, 5.2.2 The brain, 5.2.3 The eye, and 5.2.4 Control of body temperature. Each one has a worked solution and a mark scheme showing where the marks go.