Cambridge IGCSE Biology · 0610
Gas exchange in humans
The lungs, breathing and the features of a good gas-exchange surface. Answer these 6 exam-style questions and get each one marked against the mark scheme — with the misconceptions it tests. No account needed to start.
Exam-style questions0 / 6 answered
Which feature gives the SHORTEST diffusion distance?
During inhalation, the diaphragm:
List FOUR features of an alveolus that adapt it for gas exchange.4 marks
How sure are you?
We catch common misconceptions, not just marks.
Describe what happens during exhalation.3 marks
How sure are you?
We catch common misconceptions, not just marks.
Explain why a single thick layer of cells would slow gas exchange.3 marks
How sure are you?
We catch common misconceptions, not just marks.
Command word · DescribeAnswer exactly what this instruction asks for — nothing less scores.
Describe how the structure of the alveoli allows efficient gas exchange. [4 marks]4 marks
How sure are you?
We catch common misconceptions, not just marks.