Biology · Oct / Nov 2019 · Paper 21 · Question 5
5090
As printed in the paper
The question as text
The diagrams show a model used to demonstrate the process of human breathing. Diagram G shows the model after breathing in, and diagram H after breathing out. G J H hinge hinge moveable piece of wood fixed piece of wood elastic band
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
5(a)(i)[1]
5(a)(ii)[3]
5(b)[3]
5(c)[3]
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