Question 20N.3.HL.TZ0.4b
| Date | November 2020 | Marks available | [Maximum mark: 2] | Reference code | 20N.3.HL.TZ0.4b |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Suggest | Question number | b | Adapted from | N/A |
The image on the left shows a developing neuron on the first day of culture (day 1). The image on the right shows the same neuron after one day (day 2).
[Source: The establishment of polarity by hippocampal neurons
in culture, CG Dotti, CA Sullivan and GA Banker, Journal of Neuroscience 1 April 1988, 8 (4) 1454–1468;
DOI: https://doi.org/10.1523/JNEUROSCI.08-04-01454.1988, Copyright ©1988 Society for Neuroscience.]
Suggest other processes that may occur during neural development.
[2]
a. neural tube differentiation/formation;
b. neuron (may) migrate to other parts;
c. axon (may) extend beyond the neural tube/myelinates;
d. synapses develop;
e. neural pruning;
Do not accept “connection” instead of “synapse”.
Most candidates suggested correctly at least one other process, and stronger candidates suggested two.
