
What this tests
Syllabus point 11.1 — Gas exchange in humans, in Gas exchange in humans. Difficulty hard (estimated from the question's demands, not a Cambridge rating).
Cambridge IGCSE Biology 0610 · 11.1 Gas exchange in humans
One real Cambridge question from Gas exchange in humans, with the official answer.

Syllabus point 11.1 — Gas exchange in humans, in Gas exchange in humans. Difficulty hard (estimated from the question's demands, not a Cambridge rating).