B3 - Diffusion
Presentation
•
Biology
•
9th - 10th Grade
•
Practice Problem
•
Hard
Nurhafiza Majid
Used 8+ times
FREE Resource
9 Slides • 4 Questions
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B3 - Movement of Substances into & out of the cell
Diffusion
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Draw your prediction of where the molecules will be after:
10 second
1 minute
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Justify your drawing in few sentences.
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
Into which cell will the oxygen diffuse the fastest?
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Today's success criteria
factors affecting the rate of diffusion
investigate the effect of surface area on the rate of diffusion
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Factors affecting the rate of diffusion
Temperature
Distance
Concentration gradient
Surface area to volume ratio
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Surface area to volume ratio
As these cubes illustrate the surface area to volume ratio of a small object is larger than that of a large object of similar shape.
Allows sufficient exchange to support the contents of the cell.
As a cell grows, its SA/V decreases.
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Conclusion
The greater the SA/V, the larger the amount of raw materials that can enter cell at one time.
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B3 - Movement of Substances into & out of the cell
Diffusion
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