AQA new specification-The role of negative feedback-B11.4
The role of negative feedback lesson created in accordance to the NEW AQA Specification (9-1) for my separates class (Year 10-KS4). This content is for HIGHER TIER only. Includes: slide animations, embedded video, practice exam question with mark scheme. This resource is suitable for combined science students. May needed to be edited for foundation students.

AQA spec link: 5.3.7
Relevant chapter: B11 Hormonal coordination. AQA Biology third edition textbook-Page 166-167.

Specification requires students to know the following;
Students should be able to explain the roles of thyroxine and adrenaline in the body. Adrenaline is produced by the adrenal glands in times of fear or stress. It increases the heart rate and boosts the
delivery of oxygen and glucose to the brain and muscles, preparing the body for ‘flight or fight’.

Thyroxine from the thyroid gland stimulates the basal metabolic rate. It plays an important role in growth and development. Thyroxine levels are controlled by negative feedback.



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Created: Jul 6, 2017

Updated: Feb 22, 2018

pptx, 15 MB


docx, 20 KB


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