DP Biology (first assessment 2025)
Question 19M.2.SL.TZ2.d
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.SL.TZ2.d |
| Level | SL | Paper | 2 | Time zone | TZ2 |
| Command term | Distinguish | Question number | d | Adapted from | N/A |
d.
[Maximum mark: 1]
19M.2.SL.TZ2.d
Distinguish between the effects of the mouse alarm compound and the effects of the control compound on the G1 neurons.
[1]
Markscheme
mouse chemicals cause action potentials «in all six neurons» while control ones cause none «remain in resting potential»/mouse chemicals cause greater responses ✔
OWTTE
Examiners report
Many missed the mark in d as they did not state that the control remained at zero.
