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Pearson Edexcel IAL Biology 8.7 Drugs & nerve impulse transmission

Practise applying drug effects to nerve transmission, using ion channels, receptors, neurotransmitters and treatment data.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
A2

Exam points

  • explain how lidocaine or toxins block ion channels and reduce action potentials
  • link nicotine or MDMA to increased transmission through receptors or neurotransmitter release
  • apply L-DOPA and carbidopa evidence to dopamine replacement in Parkinson's disease

8.7—Drugs and nerve impulse transmission question 1

[Maximum number: 1]

The photograph shows the eyes of a meerkat.

Figure for Question 8.7—Drugs and nerve impulse transmission question 1 — Edexcel A-Level Biology A2

Photoreceptors stimulate nerve transmission in the eye.

Which of these drugs would increase nerve transmission?

A

ecstasy (MDMA) and lidocaine

B

ecstasy (MDMA) and nicotine

C

lidocaine and nicotine

D

lidocaine only

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