Sensors record an electrical impulse travelling through a pathway containing three neurones and two synapses. The total distance travelled along the neurones is 1.50 m. The recorded time is 0.0310 s. Each synapse adds a delay of 0.0030 s.
Calculate the mean speed of the impulse while it is travelling along the neurones.
Use speed=distance÷time\text{speed}=\text{distance}\div\text{time}speed=distance÷time.
Give your answer in m/s\text{m/s}m/s.
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.