Biology 9700 · AS & A Level · Control and coordination in mammals
Control and coordination in mammals — practice question
Nerve impulses must cross synapses. Table 1.1 lists the events that allow a nerve impulse to pass across a cholinergic synapse. The events are not arranged in the correct sequence.
(a)[4]
Complete Table 1.2 to show the events in the correct sequence. Two of the events are already provided for you.
(b(i))[2]
Explain how synapses ensure nerve impulses travel in one direction only.
(b(ii))[2]
In a learning activity, it is believed that the number of synapses between neurones increases. Suggest the benefits of this greater number of synapses.
(ii)[2]
Suggest the benefits of this larger number of synapses.
Worked solution & mark scheme
This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Right order: E, H, A, J, C, F, B, G, D, I” …