Explore free A-level Biology revision articles about homeostasis, including feedback mechanisms, temperature control, blood-glucose control, diabetes, kidney function and the control of blood water potential. These explanations can support students studying AQA, OCR A or Edexcel Salters–Nuffield Biology, although the precise content required varies between exam boards.
Homeostasis revision articles
- Feedback Mechanisms – Homeostasis Ep 1
Homeostasis is the maintenance of a stable internal environment. The conditions inside the body must be stable so that cells can function properly. For example,… Continue Reading → - Control of Body Temperature – Homeostasis Ep 2
Control of body temperature is the first example of homeostasis we will look at in this series. For humans, normal body temperature is 37°C. It… Continue Reading → - Control of Blood Glucose – Homeostasis Ep 3
Control of blood glucose is very important. Sufficient glucose must be delivered to cells for respiration, but too much glucose can eventually result in coma… Continue Reading → - Diabetes Mellitus – Homeostasis Ep 4
In the last article we looked at how the body uses negative feedback mechanisms to control the concentration of glucose in the blood. Diabetes mellitus… Continue Reading → - Ultrafiltration and Selective Reabsorption in The Kidneys – Homeostasis Ep 5
The kidneys are important organs for maintaining blood water potential and excreting waste products from the blood. In this article, we will look at the… Continue Reading → - Control of Blood Water Potential – Homeostasis Ep 6
In the first article about the kidneys, we learnt how blood is filtered in the Bowman’s capsule and how some substances are reabsorbed in the… Continue Reading →
Continue your A-level Biology revision
These free articles are designed to support your understanding of individual Biology topics. Browse the other revision topics available on the website, or explore the complete specification-matched notes for your exam board.
