Question 20N.3.HL.TZ0.5
| Date | November 2020 | Marks available | [Maximum mark: 5] | Reference code | 20N.3.HL.TZ0.5 |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Label, Outline, State | Question number | 5 | Adapted from | N/A |
The drawing shows a vertical section through the brain.
[Source: TefiM / istockphoto.com.]
Label the cerebellum on the diagram.
[1]
label to cerebellum
TefiM / istockphoto.com
The vast majority of candidates could label the cerebellum correctly, but fewer could state its function.
State a function of the cerebellum.
[1]
controls/coordinates (motor) movements/balance
On the diagram, label one named structure that produces hormones.
[1]
label to pituitary
OR
label to hypothalamus;
Most candidates could correctly label one named structure producing hormones.
Outline one method that can be used to investigate the function of different parts of the brain.
[2]
Alternative 1:
a. fMRI;
b. scan detects changes in blood flow/oxygen in blood
OR
more active parts of brain receive more blood flow;
Alternative 2:
c. lesions/autopsy;
d. part of the brain damaged
OR
loss of function detected;
Alternative 3:
e. stimulation during open brain surgery;
f. reaction observed;
The âfâ must be written for fMRI.
Description must relate to method named.
The majority of candidates could name one method to investigate the function of different parts of the brain, mainly fMRI, but the change in blood flow was obscure for some or lacked sufficient details; other valid methods were seen, such as lesions, autopsy or open surgery.
