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Module 4: Responding to the Environment
ee5.4.3 Animal Behaviour

(a) explain the advantages to organisms of innate behaviour
Behaviour ­ the responses of an organism to its environment, which increase its chances of survival. An organism
must be able to detect changes in the environment, which form stimuli, then carry…

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Module 4: Responding to the Environment
Fixed Action A stimulus is required to initiate an instinctive behavioural response. Stimuli lead to
Patterns (FAP) releaser mechanisms within the brain, which in turn produce the response (FAP).
e.g. in the courtship and mating of sticklebacks (fish), females will follow almost any small…

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Module 4: Responding to the Environment
on hearing the bell, even if they could not see the food. The ringing is known as a conditioned
stimulus , which leads to a new reflex action called a conditioned response .
Operant Animals learn to associate action (the operant ) with a…

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Module 4: Responding to the Environment
(f) discuss how the links between a range of human behaviours and the dopamine receptor DRD4 may
contribute to the understanding of human behaviour
Dopamine ­ acts as a neurotransmitter and a hormone . It is produced all
over the body and controls the…


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