Worksheet on homeostasis and thyroid function, covering thyroxine, TSH and nutrient deficiencies as well as revising homeostasis and negative feedback generally. This two-page worksheet has plenty of illustrations and diagrams to help students remember the topic. Targets the Edexcel 9-1 biology GCSE. There’s an in-depth mark scheme and versions for colour and black and white printing.
Doing AQA? I have a separate version of the worksheet for the AQA course.
Doing the Edexcel iGCSE? This worksheet isn’t needed, that course doesn’t go into so much depth on the topic.
2024 update: following feedback from students, added more space for answers.
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