This lesson starts with past iGCSE exam questions on homeostatic mechanisms for temperature control, blood glucose control and water control. The lesson then progresses to look at the importance of homeostasis in maintaining dynamic equilibrium. Feedback loops introduce the idea of negative feedback. There is a small section on positive feedback, which although is not on the CIE syllabus, is useful for students to understand the concept of the importance of negative feedback switching off. All resources are included at the end of the PPT, and the starter activity is provided as a separate document. Also included is the Biofact sheet for this subject.
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