Paper 1 H - SAMPLE SET 1 Q19
19) A boy picks up a hot plate and quickly drops it. This is a reflex action. (a) Describe the sequence of events that happens in his nervous system during this reflex action. [5]
(b) The table shows information about different types of neurons.
(b) The table shows information about different types of neurons.
(i) Discuss the effect of diameter on the speed of impulse. [2]
(ii) Explain how strong a conclusion, if any, you can make from the data about the effect of the myelin sheath on the speed of impulse. [2]
(Total for Question 19 = 9 marks)
(ii) Explain how strong a conclusion, if any, you can make from the data about the effect of the myelin sheath on the speed of impulse. [2]
(Total for Question 19 = 9 marks)