Waec Model Questions Vol1 2024 Biology Question 37
Practice objective / multiple choice question 37 from the 2024 Waec Model Questions Vol1 Biology examination.
A simple spinal reflex arc consists of three neuronal segments: a sensory neuron (0.5 m long, unmyelinated, conduction speed 50 m·s⁻¹), an interneuron (0.2 m long, myelinated, speed 80 m·s⁻¹) and a motor neuron (0.4 m long, myelinated, speed 60 m·s⁻¹). Each synapse introduces a fixed delay of 0.5 ms. Calculate the total time taken for the reflex response. If the ambient temperature falls by 10 °C and this reduces the conduction speed of all neurons by 10 %, what is the new total reflex time (in ms, to one decimal place)?
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This is Waec Model Questions Vol1 2024 Biology Question 37. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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