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Co-ordination and response
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How responses are organised

How responses are organised

Organisms survive by detecting changes and making responses. A stimulus is a change in the internal or external environment, a receptor detects it, and an effector carries out the response.

Co-ordination and response Lesson

  1. IGCSE
  2. /Biology
  3. /Co-ordination and response

Step-by-step lessons covering Edexcel IGCSE Biology Co-ordination and response for IGCSE Biology. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Start with the foundational cell biology and core content before moving on to the more data-heavy ecology, genetics and practical-skills topics, which carry a large share of the exam marks.