Diffusion and exchange surfaces
Define diffusion and describe the factors affecting it. Explain how diffusion is affected by surface area to volume ratio and relate this to examples of exchange over surfaces in organisms.
Diffusion and exchange surfaces
Define diffusion and describe the factors affecting it. Explain how diffusion is affected by surface area to volume ratio and relate this to examples of exchange over surfaces in organisms.
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Lesson details
Key learning points
- Describe how substances move in and out of cells by diffusion
- Explain factors that can affect the rate of diffusion
- Calculate surface area to volume ratios
- Explain adaptations for exchange
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6 Questions
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6 Questions
increases surface area
short diffusion distance
increases concentration gradient