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2.3 The nervous system and brain

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Question 29
H

A researcher stimulates a motor neurone at two different points and records the delay before the same muscle contracts.

Table

Distance from stimulation point to muscle / mDelay / ms
0.308
0.7016

Assume the delay at the muscle is unchanged. What is the impulse speed along the section between the two stimulation points?

[1]
A

44 m/s44\ \text{m/s}44 m/s

B

88 m/s88\ \text{m/s}88 m/s

C

25 m/s25\ \text{m/s}25 m/s

D

50 m/s50\ \text{m/s}50 m/s

Markscheme

2.3 The nervous system and brain Questions

  1. GCSE
  2. /Biology
  3. /2.3 The nervous system and brain

43 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.

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