DP Biology (first assessment 2025)
Question 22M.1A.SL.TZ1.28
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.1A.SL.TZ1.28 |
| Level | SL | Paper | 1A | Time zone | TZ1 |
| Command term | Question number | 28 | Adapted from | N/A |
28.
[Maximum mark: 1]
22M.1A.SL.TZ1.28
The image shows a neuron.
What is the function of X?
A. Increases the speed of transmission along the axon
B. Increases the rate of exchange of sodium and potassium ions
C. Holds bundles of neurons together to form a nerve
D. Determines the direction of the action potential
[1]
Markscheme
A
