How To Nail Challenging Science Questions That Many Students Fumble On? Question 8

By: Shirleen

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1. Question:

The graphs below shows the volume of air Jane inhaled and exhaled before and during her exercise.

Explain why Jane inhaled more air while exercising.

2. Topic(s):

Respiratory System

3. Key words:

air, inhaled, exhaled explain

4. Answer:

As Jane is exercising, her heart is beating faster to supply more oxygen and digested food for the cells to generate more energy and remove carbon dioxide at a faster rate.

5. Tip(s):

Think “gaseous exchange”. Oxygen in, carbon dioxide out.

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