CIE iGCSE Co-Ordinated Science B11. Gas exchange in humans Exam Style Questions Paper 1
Question
Which diagram correctly shows the diffusion of carbon dioxide and oxygen between an alveolus and a capillary?
▶️Answer/Explanation
Answer: C
Explanation: Diagram C correctly shows the diffusion of oxygen from the alveolus into the capillary and carbon dioxide from the capillary into the alveolus. This is because oxygen moves from an area of high concentration (alveolus) to an area of low concentration (capillary), and carbon dioxide moves in the opposite direction.
Question
The diagram shows the main structures in the breathing system of humans.
Which row identifies the larynx, bronchus, trachea and bronchioles?
▶️Answer/Explanation
Ans 😀
Question
When a person exercises for 10 minutes, what is the effect on the depth and rate of their
breathing?
▶️Answer/Explanation
Ans :A
Question
In the diagram of the human breathing system, which structures are correctly labelled?
(A) alveoli and bronchiole
(B) alveoli and trachea
(C) bronchus and bronchiole
(D) bronchus and trachea
▶️Answer/Explanation
Ans : B