DP Biology (last assessment 2024)
Question 17N.3.SL.TZ0.b
| Date | November 2017 | Marks available | [Maximum mark: 2] | Reference code | 17N.3.SL.TZ0.b |
| Level | SL | Paper | 3 | Time zone | TZ0 |
| Command term | Explain | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 2]
17N.3.SL.TZ0.b
The image shows a human ear.
[Source: Leonello/iStock]
Explain the function of the cochlea in hearing.
[2]
Markscheme
a. sound «waves» enters the ear causing fluid in the cochlea to move/vibrate
b. «movement of fluid in cochlea» causes the hair cells to move
c. «details of hair cell movement» is transmitted to brain via the auditory nerve
[Max 2 Marks]
