DP Biology (last assessment 2024)
Question 18M.3.SL.TZ1.7
| Date | May 2018 | Marks available | [Maximum mark: 4] | Reference code | 18M.3.SL.TZ1.7 |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | Discuss | Question number | 7 | Adapted from | N/A |
7.
[Maximum mark: 4]
18M.3.SL.TZ1.7
Discuss the methods used to identify the role of specific parts of the brain.
[4]
Markscheme
a. animal experiments give information about the brain under controlled laboratory conditions
b. may not be applicable to humans / must meet high ethical standards OWTTE
c. autopsy of a damaged brain may allow conclusions about the role of the affected part
d. lesions/removal of part of the brain allows conclusion about functions of that part
e. fMRI (scan) identifies brain activity as a result of stimulation (using a magnetic field)
f. because active parts of the brain receive increased blood flow
g. most direct method / least invasive
