At a synapse, a chemical causes neurotransmitter molecules to be removed from the synaptic gap more quickly than normal, soon after they bind to receptors on the receiving neurone.
What is the most likely effect?
the receiving neurone continues to be stimulated after the signal has ended
impulses begin to travel in both directions across the synapse
the sending neurone releases less neurotransmitter in response to each impulse
the receiving neurone is stimulated for a shorter time
111 exam-style questions on Edexcel GCSE Biology 2.3 The nervous system and brain, covering 2.3.1 Structures and functions of the brain, 2.3.2 Imaging brain function with scanning, 2.3.3 Limitations in treating nervous system damage, 2.3.4 Neurones and impulse transmission, and 2.3.5 Structure and function of a reflex arc. Each one has a worked solution and a mark scheme showing where the marks go.