1. Homeostasis

Available for over a year

Dr Alex Lathbridge guides you through the most important GCSE Biology facts, with a few jokes thrown in too. In this first episode of our series all about homeostasis and response, Dr Alex Lathbridge introduces the concept of homeostasis - the maintenance of a constant internal environment in the body. Dr Alex will look at different types of external stimuli that can affect the body and the three key components of automatic control systems: receptors, the coordination centre and effectors. Finally, Dr Alex will cover what on earth a negative feedback loop is. Take a look on the BBC Bitesize website to find out more about this topic, with revision notes, quizzes and exam-style questions: https://www.bbc.co.uk/bitesize/guides/z2374qt/revision/1 Suitable for: Combined science AQA Synergy AQA Trilogy Edexcel Eduqas OCR Gateway Single science AQA Edexcel OCR 21st Century OCR Gateway