How many The gas exchange system questions are there for 9700?

This page collects 7 recent Cambridge Biology (9700) past-paper questions tagged to The gas exchange system. Each links straight to instant marking against the official 9700 scheme.

How are The gas exchange system answers marked?

Type or photograph your working and MarkScheme scores it against the real 9700 mark scheme for this topic — method, accuracy and any band descriptors — so you see exactly where the marks are.

Where can I learn The gas exchange system first?

Start with the free Biology lesson on The gas exchange system, then come back and drill past-paper questions under timed conditions.

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9700 · topic questions

The gas exchange system

Biology7 questions

7 past-paper questions on The gas exchange system

9700/22 · May/June 20255 marks
With reference to Fig. 4.1 and Fig. 4.2, describe and explain how the changes that occur as a result of granuloma formation: •…
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9700/23 · October/November 20244 marks
Microscope slides were prepared from two regions of the gas exchange system. Fig. 1.2 and Fig. 1.3 are photomicrographs of the…
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9700/23 · May/June 20244 marks
Suggest and explain how a steep oxygen concentration gradient is maintained in the lungs.
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9700/22 · October/November 20243 marks
One consequence of the pneumonia that results from P. jirovecii infection is a decrease in the quantity of oxygen that is…
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9700/22 · May/June 20253 marks
On Fig. 4.1, use a label line and label: • a bronchus • a bronchiole • a blood vessel.
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9700/23 · October/November 20242 marks
Describe the role of cartilage in the gas exchange system.
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9700/22 · May/June 20242 marks
Explain how smooth muscle cells in the walls of the bronchioles contribute to the function of these airways.
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Question stems are shortened previews. Open a question to attempt the full version and have it marked.

Worked example

What a lost mark actually looks like

This answer reaches the right coordinates and still drops a mark — the conclusion is stated, but never justified. Examiners pay for the reasoning, not the answer.

MARKED

80%

Strong

M1dy/dx = 3x^2 - 12x + 9M1 earned
M1(x - 1) $(x - 3) = 0$ M1 earned
A1 $x = 1$ or $x = 3$ A1 earned
B1(1, 5) is a maximum and (3, 1) is a minimumB1 not earned

B1 — withheld
You stated the nature of each point correctly, but stated it without justification. This mark needs the reasoning shown — either evaluate the second derivative (d²y/dx² = 6x − 12, giving −6 at $x = 1$ and +6 at $x = 3$ ) or show a sign change of dy/dx either side of each point. An unsupported assertion earns nothing here even when the conclusion is right.

The gas exchange system (9700) past-paper questions — marked instantly

These are real Cambridge Biology past-paper questions on The gas exchange system. Open one, attempt it, then upload your working — MarkScheme grades it against the official 9700 mark scheme so you see exactly where the marks are won and lost on this topic.

Mark your answer →Learn The gas exchange system 9700 grade boundaries

Frequently asked questions

How many The gas exchange system questions are there for 9700?: This page collects 7 recent Cambridge Biology (9700) past-paper questions tagged to The gas exchange system. Each links straight to instant marking against the official 9700 scheme.
How are The gas exchange system answers marked?: Type or photograph your working and MarkScheme scores it against the real 9700 mark scheme for this topic — method, accuracy and any band descriptors — so you see exactly where the marks are.
Where can I learn The gas exchange system first?: Start with the free Biology lesson on The gas exchange system, then come back and drill past-paper questions under timed conditions.