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The graph shows the oxygen uptake for an athlete when walking and running - Edexcel - GCSE Biology - Question 4 - 2015 - Paper 1
Question 4
The graph shows the oxygen uptake for an athlete when walking and running. a) Compare the oxygen uptake when the athlete is walking and running at speeds from 6 to ... show full transcript
Worked Solution & Example Answer:The graph shows the oxygen uptake for an athlete when walking and running - Edexcel - GCSE Biology - Question 4 - 2015 - Paper 1
Step 1
Compare the oxygen uptake at 6 km per hour
Answer
At 6 km per hour, the oxygen uptake for walking is approximately 25 cm/kg/min, while the uptake for running is significantly higher, around 45 cm/kg/min. This indicates that the athlete requires more oxygen when running compared to walking.
Step 2
Compare the oxygen uptake at 8 km per hour
Answer
For 8 km per hour, the graph shows that the oxygen uptake continues to rise with running reaching around 55 cm/kg/min compared to walking at approximately 35 cm/kg/min. This further illustrates the increased demand for oxygen when transitioning to running.
Step 3
Compare the oxygen uptake at 10 km per hour
Answer
At 10 km per hour, the oxygen uptake for running rises to about 65 cm/kg/min, whereas walking only requires about 45 cm/kg/min. This demonstrates a clear pattern that running requires a higher oxygen intake at higher speeds compared to walking.