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Learning objective

Clarify how physical activity affects heart rate.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE BiologyTransport in animalsSupplement content

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Quick explanation

Clarify how physical activity affects heart rate

  • This point belongs to Heart, especially Heart outcomes.
  • You need to be able to clarify how physical activity affects heart rate.
  • The key ideas to know are Explain.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Explain

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This objective helps connect Heart outcomes to exam-style questions, flashcards, and revision notes for Heart.

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Paper 4 structured question: Heart

Paper 4Theory (Extended)3 marks

Description

Heart Rate and Physical Activity

The student records their heart rate at rest and immediately after running. The heart rate increases from 70 beats per minute (bpm) at rest to 120 bpm after running.

ConditionHeart Rate (bpm)
Rest70
After running120
  1. a

    Explain why the heart rate increases during physical activity.

    Aim for approximately 3 distinct marking points.

    [3]
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