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Surface area to volume ratio

Question 2

Table 1 shows data for two small mammalian species: the common pipistrelle (a flying bat) and the wood mouse (a ground-dwelling rodent).

Table 1

Mammal	Mean body mass / $kg\text{kg}$	Mean lung volume / $cm3\text{cm}^3$
Common pipistrelle	0.0050	0.90
Wood mouse	0.020	0.80

Calculate how many times the lung volume per unit of body mass of the common pipistrelle is greater than that of the wood mouse.

Give your answer to an appropriate number of significant figures.

[3]

Suggest one explanation for this difference.

[1]

Markscheme

Surface area to volume ratio Questions

A Level
Biology
Surface area to volume ratio

10 exam-style questions on AQA A Level Biology Surface area to volume ratio, covering Surface area to volume ratio. Each one has a worked solution and a mark scheme showing where the marks go.

Surface area to volume ratio

Question bank

Surface area to volume ratio

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Question 2

Table 1 shows data for two small mammalian species: the common pipistrelle (a flying bat) and the wood mouse (a ground-dwelling rodent).

Table 1

Mammal	Mean body mass / $kg\text{kg}$	Mean lung volume / $cm3\text{cm}^3$
Common pipistrelle	0.0050	0.90
Wood mouse	0.020	0.80

Calculate how many times the lung volume per unit of body mass of the common pipistrelle is greater than that of the wood mouse.

Give your answer to an appropriate number of significant figures.

[3]

Suggest one explanation for this difference.

[1]

Markscheme

Surface area to volume ratio Questions

A Level
Biology
Surface area to volume ratio

10 exam-style questions on AQA A Level Biology Surface area to volume ratio, covering Surface area to volume ratio. Each one has a worked solution and a mark scheme showing where the marks go.