Some athletes train at high altitudes (over 2000 m above sea level) - Edexcel - GCSE Biology - Question 4 - 2012 - Paper 1
Question 4
Some athletes train at high altitudes (over 2000 m above sea level). There is less oxygen in the air at high altitudes.
(a) The graph shows the number of red blood ... show full transcript
Worked Solution & Example Answer:Some athletes train at high altitudes (over 2000 m above sea level) - Edexcel - GCSE Biology - Question 4 - 2012 - Paper 1
Step 1
Describe the change in the number of red blood cells during this ten-week training period.
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Answer
During the training period, the number of red blood cells increases up to approximately 6.075 x 10² per dm³ by week 6. After this point, the number of red blood cells remains constant, indicating that the athlete's body has adapted to the high altitude and is no longer producing additional red blood cells.
Step 2
Suggest the minimum training period this athlete needs to produce the highest number of red blood cells.
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Answer
6 weeks.
Step 3
State the function of red blood cells.
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