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Pearson Edexcel IAL Biology 4.13 Development of drug testing

Practise comparing historic and modern drug testing, including digitalis, placebos, double-blind trials and staged safety checks.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • compare Withering's foxglove testing with modern trials using known active ingredients
  • explain how phased testing checks safety, dosage and effectiveness before wider use

4.13—Development of drug testing question 1

[Maximum number: 2]

The five stages of cancer are used to describe the size and spread of a cancer in a human body.

Anticancer drugs have to undergo double-blind trials before they are used to treat patients.

Describe how a placebo is used in a double-blind trial.

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