Zusammenfassung der Ressource
A2 Biology Unit 1- Module 1:
Homeostasis and Communication
- Communication
- A good communication system:
- Covers entire body
- Cells can communicate
- Specific communication
- Short and long term responses
- Rapid communication
- Controlling optimum
conditions for survival
- Temperature
- pH
- Aqueous environment for metabolic reactions
- Free from toxins and inhibitors
- Stimulus: A change in the
environment that causes a
response
- Response: A change in behaviour
or physiology as a result of a
stimulus
- Homeostasis
- Definition