• Created by: Sruthy
  • Created on: 14-02-14 17:46
View mindmap
  • Communication
    • the need for a communication system
      • Organisms must be able to respond to changes in their internal and external environments.
    • Cell Signalling
      • Examples include nervous and hormonal
    • Negative Feedback
      • A process that brings about a reversal of any change in conditions. Ensures optimum state is maintained. Essential for Homeostasis.
    • Positive Feedback
      • A process that increases any change detected by the receptors.
    • Define Homeostasis
      • The maintenance of the internal environment in a constant state despite external changes.


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Human, animal and plant behaviour resources »