SD206 Examination Essay Questions (Set A)

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Qu.1 Explain the biology underlying jet lag.
Qu.2 Write an essay in which you discuss the relevance of the concept of motivation to aggression.
Qu.3 (a) What are the cellular and sub-cellular events occurring during memory formation? (12 marks)
(b) What is a Hebbian synapse, and to what extent do those events described in (a) support the concept of a Hebbian synapse? (8 marks).
Qu.4 The developing nervous system provides an overabundance of neurons. How does the nervous system choose which shall live and which shall die?
Qu.5 Discuss the similarities and differences between vision and pain.
Qu.6 (a) What is the cerebral cortex and what are its distinguishing features? (14 marks)
(b) Birds do not have a cerebral cortex whereas mammals do. What do you think the cerebral cortex has enabled mammals to do that birds cannot? (6 marks)
Qu.7 Each neuron can receive 1000 or more inputs. How does a neuron integrate these inputs? Put another way, how does a neuron know when to initiate an action potential?
Qu.8 'Survival of the species' is a well-used phrase and an apparently reasonable explanation of much animal behaviour. Using at least three different examples, write an essay in which you explain why modern ethologists regard it as an invalid explanation.
Qu.9 There is a variety of different explanations of depression. How do these different explanations affect the way in which depression is treated?



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