| Date | November 2016 | Marks available | 1 | Reference code | 16N.3.HL.TZ0.7 |
| Level | Higher level | Paper | Paper 3 | Time zone | TZ0 |
| Command term | State | Question number | 7 | Adapted from | N/A |
Question
State the function of the bones in the middle ear.
[1]
b.
Explain the role of the hair cells in the cochlea.
[3]
c.
Markscheme
amplify/transmit the sound/vibrations
b.
a. hair cells located within the organ of Corti
OR
hair cells are mechanoreceptors
b. hairs/cilia of hair cells move/vibrate with the movement of the liquid/fluid in the cochlea
c. amount of movement is proportional to the amplitude/loudness of the sound
d. frequency/wavelength/pitch distinguished by different hair cells/according to position of hair cells/length of hairs/cilia
e. hair cells transmit impulses to auditory nerve/brain
c.
Examiners report
[N/A]
b.
[N/A]
c.
Syllabus sections
Option A: Neurobiology and behaviour » Option A: Neurobiology and behaviour (Core topics) » A.3 Perception of stimuli
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