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Communication

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Enzymes need:
Temperature
pH
aqueous environment
no toxins/inhibitors

External Environment ­ monitored, organism changes
behaviour/physiology to reduce stress.
Env. change = stimulus. Organism change =
response.
Slow change = gradual response. Quick change = rapid
response.

Internal Environment ­ tissue fluid in animals.
Toxic/unwanted substance buildup in TF ­ cells…

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