A2 Biology Chapter 1
- Created by: Chloesn
- Created on: 16-09-14 20:08
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- Chapter 1 Communication
- Coordination
- Cell signalling
- Hormones
- Nerves
- Cell signalling
- Homeostatis
- Maintaining a constant core temperature
- 37o
- Negative feedback
- Moving the parameter back to the norm
- Temperature
- Amount of water
- Concentration of glucose
- Receptor
- Effector
- Positive feedback
- Conduction
- Radiation
- Endotherms
- Mammals and birds
- Balance between heat input/output
- Largely independent of the external temperature
- Energy intake used for maintaining body temperature
- Activity possible in any weather
- Ectotherms
- Everything but endotherms
- Need less food
- Tend to be inactive
- Metabolic reactions are slow
- Behaviour
- Survive long periods without eating
- Greater proportion used for growth
- Temperature regulation
- Temperature receptors
- Hypothalamus
- Temperature receptors
- Coordination
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