Complete the sentence by putting a cross (X) in the box next to your answer - Edexcel - GCSE Biology - Question 5 - 2013 - Paper 1
Question 5
Complete the sentence by putting a cross (X) in the box next to your answer.
The difference between the volume of blood leaving the heart at rest and the volume of ... show full transcript
Worked Solution & Example Answer:Complete the sentence by putting a cross (X) in the box next to your answer - Edexcel - GCSE Biology - Question 5 - 2013 - Paper 1
Step 1
Determine the volumes at rest and maximum exercise intensity
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Answer
From the graph, the volume of blood leaving the heart at rest is approximately 80 cm³ and at maximum exercise intensity is approximately 150 cm³.
Step 2
Calculate the difference
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Answer
To find the difference, subtract the volume at rest from the maximum:
150extcm3−80extcm3=70extcm3
Step 3
Select the correct answer
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Answer
The difference is 70 cm³, so the correct answer is A.
