Gce Model Questions Vol1 2019 Biology Question 34
Practice objective / multiple choice question 34 from the 2019 Gce Model Questions Vol1 Biology examination.
A simple reflex arc consists of a sensory neuron 0.8 m long that conducts impulses at 60 m s\(^{-1}\), a motor neuron 0.5 m long that conducts at 50 m s\(^{-1}\), and a single synaptic delay of 0.5 ms at the interneuron. (a) Calculate the total time (in ms) from the stimulus reaching the sensory receptor to the muscle contraction. (b) If the temperature falls and the conduction velocities of both neurons each decrease by 10 % while the synaptic delay remains unchanged, what is the increase in the total reflex time (in ms)? Give your answer to one decimal place.
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About This Question
This is Gce Model Questions Vol1 2019 Biology Question 34. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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