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Question 19N.3.HL.TZ0.6c

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Date November 2019 Marks available [Maximum mark: 2] Reference code 19N.3.HL.TZ0.6c
Level HL Paper 3 Time zone TZ0
Command term Describe Question number c Adapted from N/A
c.
[Maximum mark: 2]
19N.3.HL.TZ0.6c

Prior to the 1840s, doctors and dentists did not routinely use anesthesia when operating on patients. However, advances in the knowledge of neurotransmitters have assisted the use of anesthesia.

(c)

Describe the main role of slow-acting neurotransmitters in memory and learning.

[2]

Markscheme

a. may cause the release of secondary messengers «in post-synaptic neuron» ✔

b. secondary messengers can persist for long time ✔

c. «secondary messengers» may enhance the synaptic connections between neurons OWTTE
OR
«secondary messengers» strengthen neural pathways «involved in memory/learning»
OR
«secondary messengers» increase the number of receptors in the postsynaptic membrane ✔

d. modulate/reduce/increase fast synaptic transmission «in the brain» ✔

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