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Learning objective

Explain that a drug is any substance introduced into the body that alters or influences chemical processes within it.

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  • Practise with linked questions.
Cambridge IGCSE Combined ScienceDrugsCore content

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Quick explanation

Explain that a drug is any substance introduced into the body that alters or influences chemical processes within it

  • This point belongs to Drugs, especially Drugs outcomes.
  • You need to be able to explain that a drug is any substance introduced into the body that alters or influences chemical processes within it.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Describe

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Paper 3 structured question: Drugs

Paper 3Theory (Core)2 marks

Description

Drugs and Their Functions

Drugs can be classified into therapeutic and recreational categories. Therapeutic drugs are used to treat medical conditions, while recreational drugs are used for pleasure. Both types can alter chemical processes in the body.

  1. a

    Explain the difference between therapeutic and recreational drugs.

    Aim for approximately 2 distinct marking points.

    [2]
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