Human gas exchange · Cambridge O Level 5090
9.1 Human gas exchange
9.1 Human gas exchange appeared in 6 of the 6 years from 2020–2025, worth 123 marks across 42 questions — about 2.93 marks each.
Based on 84 real Cambridge past papers, 2020–2025.
Questions per year
How many Biology questions tagged to this topic appeared each year.
- 20209
- 202111
- 20227
- 20234
- 20245
- 20256
Appearance history
- Most recent
- 2025
- First in range
- 2020
- Years since last
- 0
- Longest gap
- 0 years
Historical occurrence only — not an exam prediction.
Related topics
Topics that most often share a question with this one.
Practise this topic
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