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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

Identify the values from the graph

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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, it is around 150 cm³.

Step 2

Calculate the difference

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Answer

To find the difference, we subtract the volume at rest from the maximum volume:

$ext{Difference} = ext{Volume at maximum} - ext{Volume at rest} = 150 ext{ cm}^3 - 80 ext{ cm}^3 = 70 ext{ cm}^3$

Step 3

Select the correct answer

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Answer

Thus, the correct answer is A 70 cm³.

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