CIE iGCSE Co-Ordinated Science B12. Respiration Exam Style Questions Paper 1
Question
What are the products of aerobic respiration?
1 carbon dioxide
2 glucose
3 water
A 1 and 2 only B 1 and 3 only C 1, 2 and 3 D 2 and 3 only
▶️Answer/Explanation
Ans : B
Question
A student places an insect in a sealed test-tube and measures the concentration of oxygen and
carbon dioxide in the test-tube. The insect is left for 30 minutes.
The concentration of oxygen and carbon dioxide are then measured again. The results are shown in the table.
Which row shows how these concentrations change during the experiment?
▶️Answer/Explanation
Ans: B
Question
Which diagram of a cell shows the correct movement of substances for the process of aerobic respiration?
▶️Answer/Explanation
Ans: C
Question
The diagram shows apparatus used to investigate respiration of blowfly larvae.
Air is sucked through the solutions of hydrogencarbonate indicator as shown.
Hydrogencarbonate indicator turns orange with carbon dioxide at atmospheric concentration. It
turns yellow with high carbon dioxide concentration.
What are the colours of the hydrogencarbonate indicator in the flasks after 24 hours?
▶️Answer/Explanation
Ans : B