IB MYP Integrated Sciences e-Assessment : Respiration Exam Style Practice Questions - New Syllabus
Question (2 mark)
Select the correct location to show the path of an oxygen molecule $\left(\mathrm{O}_2\right)$ through the respiratory system.
▶️Answer/Explanation
Ans:
- Nose: Oxygen enters through the nose (or mouth).
- Trachea: It travels down the trachea (windpipe).
- Lungs: The trachea branches into the lungs.
- Bronchi: Within the lungs, it goes through the bronchi.
- Alveoli: Finally, it reaches the alveoli where gas exchange occurs.
