# Life Sciences Paper 1, November 2024, question 1.1.9

> The diagram below shows part of the human ear, with structures labelled P... Marked mark by mark. Q1.1.9, Life Sciences Paper 1 November 2024, 2 marks.

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Last updated: 2026-11-12

Subject: Life Sciences. Source: Based on Nov 2024 · Paper 1 · Q1.1.9. Marks: 2. Not yet checked by a teacher.

## Question 1.1.9 (2 marks)

The diagram below shows part of the human ear, with structures labelled P, Q and R. Very strong sound vibrations have travelled through the fluid of the cochlea. Which ONE of the following describes what happens to the extra pressure in the fluid?

- A: The pressure is released at P
- B: The pressure is released at R
- C: The pressure is absorbed at Q
- D: The pressure is absorbed at P and R

Figure: Section through the human ear. P is the eardrum at the inner end of the ear canal. Behind it the middle ear holds three small bones that lead to the inner ear on the right, which contains the coiled cochlea. Q is the round window, a small membrane on the wall between the middle ear and the cochlea. R is the Eustachian tube, a narrow tube running from the bottom of the middle ear towards the throat.

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[Answer this question](https://sharpkop.co.za/life-sciences/2024-nov-p1/q1-1-9/) and see it marked mark by mark, with the reason for every lost mark.

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