Gce Model Questions Vol1 2018 Biology Question 7

Practice objective / multiple choice question 7 from the 2018 Gce Model Questions Vol1 Biology examination.

Gce Model Questions Vol1 2018 Biology Objective / Multiple Choice Medium Difficulty
Question 7 GCE_MODEL_QUESTIONS_VOL1 • 2018 • BIOLOGY • objective

A simple reflex arc involves a sensory neuron 0.8 m long conducting at 60 m s\(^{-1}\), an interneuron 0.2 m long conducting at 30 m s\(^{-1}\), and a motor neuron 0.5 m long conducting at 50 m s\(^{-1}\). Each synapse in the pathway introduces a delay of 0.5 ms. After the reflex, the foot moves forward at 2 m s\(^{-1}\) for 0.1 s and then returns to its original position at the same speed. Determine the total time, in milliseconds, from the moment the stimulus is applied until the foot is back at its starting point.

Answer Options

Correct Answer A. 231 ms
B. 241 ms
C. 221 ms
D. 200 ms
Correct Answer
A
Correct Option:
231 ms

About This Question

This is Gce Model Questions Vol1 2018 Biology Question 7. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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