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Quiz: Exchange Surfaces - What Makes Diffusion Efficient

AQA GCSE Biology 8461 specification

10 Steps8 Questions

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Building on what you've learned about diffusion, let's test your understanding of how exchange surfaces are adapted to make diffusion efficient!

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Which feature of alveoli increases their efficiency for gas exchange?

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Which of these factors improve diffusion efficiency? (Select all that apply)

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Exchange surfaces often have a {{blank0}} membrane to reduce the distance molecules have to travel during diffusion.

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Why do fish gills have lamellae?

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Which adaptations help root hair cells absorb water and minerals efficiently? (Select all that apply)

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Efficient gas exchange in the lungs requires a {{blank0}} blood supply to maintain the {{blank1}} gradient.

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