plumiThe mammalian gaseous exchange system: OCR A‑Level Biology A questions
OCR A-Level Biology A past-paper questions on 3.1.1.2 The mammalian gaseous exchange system, 2016–2025, with mark schemes and examiner’s reports where available.
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Q6(d)
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All 13 questions on The mammalian gaseous exchange system, as a list
- June 2025, AS Paper 2, Q6(d) (3 marks): The table shows components in the mammalian gaseous exchange system. Complete the table by stating one role of each component. Components Role Incomplete rings
- June 2023, Paper 3, Q1(a)(i) (2 marks): Name the tissues labelled A and B in Fig. 1.1. A B [2]
- June 2023, Paper 3, Q1(a)(ii) (2 marks): Name the two types of cell in the box labelled C in Fig. 1.1 and outline their functions. 1 Name Function 2 Name Function [2]
- June 2023, AS Paper 1, Q21(b) (1 mark): The human lung is part of the gas exchange system. Name the component of the gas exchange system in the circle labelled M in the light micrograph. [1]
- June 2023, AS Paper 1, Q21(c) (2 marks): Name the tissue labelled N in the light micrograph and outline its function in component M. [2]
- November 2020, Paper 1, Q21(a) (3 marks): The table compares the features of airways in the lungs. Complete the table by putting a tick (3) in each box if the feature is present and a cross (8) if the f
- November 2020, AS Paper 2, Q2(b)(ii) (1 mark): Sjogren’s syndrome is a rare condition that can reduce the production of mucus. Suggest how the upper respiratory tract of a person with Sjogren’s syndrome migh
- November 2020, AS Paper 2, Q6(c) (2 marks): In mammals the lungs act as the gas exchange system. Various components of this system work together to ensure gas exchange is efficient. Two such components ar
- June 2018, AS Paper 1, Q21(c)(ii) (2 marks): When out of the water, the Titicaca water frog is able to use its lungs to absorb oxygen. Lungs contain specialised gaseous exchange surfaces. Describe and expl
- June 2017, Paper 3, Q7(b) (4 marks): Mammals use lungs for gas exchange. The following passage describes how gases are moved in and out of the lungs. Complete the passage using the most appropriate
- June 2017, AS Paper 1, Q1 (1 mark): Air moves in and out of human lungs through the trachea, which is lined with cells. The diagram below shows a section containing these cells. Cell X Cell Y Cell
- June 2017, AS Paper 2, Q3(b)(iii) (2 marks): Describe how the trachea of a mammal is different from the trachea shown in Fig. 3. [2]
- June 2017, AS Paper 2, Q3(c) (6 marks): Bony fish and insects have different gas exchange systems. Both can be observed by dissection. (c)* Alveoli are located in the lungs of mammals. Explain how alv
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