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2.3 The nervous system and brain

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Question 4
F

A substance prevents neurotransmitter from being released at a synapse. Impulses still reach the end of the first neurone.

What is the effect on transmission at this synapse?

[1]
A

the next neurone is stimulated because impulses pass directly across the gap

B

the next neurone is not stimulated because no impulse enters the first neurone

C

the next neurone is not stimulated because no chemical crosses the gap

D

the next neurone is stimulated because myelin carries chemicals across the gap

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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