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Date May 2018 Marks available 1 Reference code 18M.3.HL.TZ1.6
Level Higher level Paper Paper 3 Time zone Time zone 1
Command term Suggest Question number 6 Adapted from N/A

Question

The table shows the typical sound intensity of different sources.

State the type of sensory receptors that detect sound.

[1]
a.i.

Suggest one reason for hearing loss caused by extended exposure to high intensity sound.

[1]
a.ii.

Outline the role of the ear in balance perception.

[2]
b.

Markscheme

mechanoreceptor

a.i.

a. permanent injury/loss of hair cells / sensory hairs in cochlea 

b. damage to bones in the middle ear / damage the connections between the ossicles 

c. ruptured eardrum

a.ii.

a. (3) semicircular canals are perpendicular/at right angles/help sense movement 

b. movement (of head) causes fluid in canals/inner ear to move 

c. deflects/bends hair cells

d. (Hair cells) send messages to brain via auditory nerve 

 

b.

Examiners report

[N/A]
a.i.
[N/A]
a.ii.
[N/A]
b.

Syllabus sections

Option A: Neurobiology and behaviour » Option A: Neurobiology and behaviour (Core topics) » A.3 Perception of stimuli
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Option A: Neurobiology and behaviour » Option A: Neurobiology and behaviour (Core topics)
Option A: Neurobiology and behaviour

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