Fechar
What conditions do all living thing need to maintain their cells
What happens to cells if they do not have the correct conditions
Why do cells in multicellular organisms communicate
What is the external environment for living organisms and what happens if it changes
Give an example of a change in the external environement
Define stimulus
Define response
What is the environment of cells
How do the activities of cells alter their own environment
How is the tissue fluid maintained
Why is it important to monitor the concentrations of waste products and substances
Why is a good communication system required?
What will a good communication system do (5 points)
Name the two major systems of communication
What is the neuronal system
What is the hormonal system?
Define homeostasis
What is maintained by homeostasis? (6)
What is the response pathway
What is the function of sensory receptors?
Give an example
What is an effector?
Give an example
What is cell signalling?
What are receptors?
What is negative feedback?
What is the mechanism for negative feedback
What are the limitations of negative feedback?
How is temperature control maintained by negative feedback
What is positive feedback?
What is the mechanism of positive feedback?
Give an example of positive feedback
Why do we need to control body temperature?
Define Ectotherm
How do ectotherms regulate their temperature?
How do ectotherms increase their temperature?
Give an example of an ectotherm trying to increase their temperature
How do ectotherms decrease their temperature?
Give an example of an ectotherm trying to decrease their temperature
What are the advantages of ectothermy?
What are the disadvantages of ectothermy?
Define endotherm
How do endotherms regulate their temperature?
What physiological mechanisms are used by endotherms to maintain body temperature when hot and cold (5)
What behavioural adaptations are used by endotherm to maintain body temperature?
What are the advantages of
