CourseCourseConceptConceptDocumentDocument

Edexcel A-Level Biology A2 8.7 Drugs and Nerve Impulse Transmission Questions

Explain how drugs block ion channels or alter receptors and neurotransmitter release, then apply marked evidence to nerve transmission, serotonin and L-DOPA treatment.

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

Edexcel A-Level Biology A2 8.7 Drugs and Nerve Impulse Transmission Questions question 1

[Maximum number: 1]

The photograph shows the eyes of a meerkat.

Figure for Question Edexcel A-Level Biology A2 8.7 Drugs and Nerve Impulse Transmission Questions 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

All question bank results loaded