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2.3 The nervous system and brain

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Question 9
H

A chemical binds to receptors on a neurone but does not stimulate the neurone. It prevents the normal neurotransmitter from binding.

What is the most likely effect?

[1]
A

fewer impulses start in the receiving neurone

B

impulses travel backwards along the sending neurone

C

more impulses start in the receiving neurone

D

impulses travel faster along the sending neurone

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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