AQA A-level biology - exchange and mass transport

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Last updated 9:12 AM on 8/28/26
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7 Terms

1
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What happens to surface area to volume ratio as an organism gets larger?

It decreases because volume increases faster than surface area.

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Why do larger organisms need specialised exchange surfaces and transport systems?

They have a smaller surface area to volume ratio.

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How does a high surface area to volume ratio affect metabolic rate?

It allows faster exchange and can support a higher metabolic rate.

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What happens when an organism has a low surface area to volume ratio?

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