Quiz: The Role of Diffusion in Transport
Pearson Edexcel Level 3 Advanced GCE in Biology A (Salters-Nuffield) (9BN0)
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Building on what you've learned about why animals need a circulatory system, let's test your knowledge of the role of diffusion in transport!
What is diffusion?
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Which of the following are examples of substances transported by diffusion? (Select all that apply)
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Diffusion is a {{blank0}} process, meaning it does not require {{blank1}}.
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Match the items on the left with their correct pairs on the right
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What happens to the rate of diffusion if the concentration gradient increases?
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Which factors can affect the rate of diffusion? (Select all that apply)
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Using Fick's law, calculate the rate of diffusion if the surface area is 10 cm², the concentration gradient is 5 mol/cm³, and the diffusion path length is 2 cm.
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Which gas is transported into cells by diffusion during respiration?
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For efficient diffusion, gas exchange surfaces must be {{blank0}} and have a {{blank1}} surface area.
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