Homeostasis & ResponseStudy Notes
Homeostasis Definition
Part of Temperature Regulation — GCSE Biology
This study notes covers Homeostasis Definition within Temperature Regulation for GCSE Biology. Topic 5: Temperature Regulation It is section 2 of 12 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 12
Practice
15 questions
Recall
20 flashcards
Homeostasis Definition
Homeostasis = the regulation of the internal conditions of a cell or organism to maintain optimum conditions for function, in response to internal and external changes.
What needs to be controlled:
- Body temperature: Enzymes work best at 37°C — too hot they denature, too cold reactions are too slow
- Blood glucose concentration: Cells need glucose for respiration but too much damages cells
- Water levels: Cells need the right amount of water for reactions; maintains osmotic balance