7. Water and nitrogen balance

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 seventh episode of our series all about homeostasis and response, Dr Alex Lathbridge breaks down the key facts about how the kidneys maintain water levels in the body. He looks at how the nephron uses selective reabsorption of useful molecules to produce urine and the process of deamination where amino acids are converted into ammonia in the liver. 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/zxgmfcw/revision/2 Suitable for: Combined science OCR 21st Century OCR Gateway Single science AQA Eduqas Edexcel OCR 21st Century OCR Gateway