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Question 18M.3.SL.TZ2.7

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Date May 2018 Marks available [Maximum mark: 4] Reference code 18M.3.SL.TZ2.7
Level SL Paper 3 Time zone TZ2
Command term Explain Question number 7 Adapted from N/A
7.
[Maximum mark: 4]
18M.3.SL.TZ2.7

Explain the stages of development and differentiation of neurons.

[4]

Markscheme

a. development of neurons occurs in the neural tube/plate 

b. produces large numbers of cells that differentiate into neurons 

c. some neurons migrate 

d. axons grow out from the immature neuron 

e. in response to chemical stimuli 

f. neurons synapse/form connections with «multiple» other neurons 

g. some neurons removed by neural pruning

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