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Maximising Diffusion in Living Things
Maximising Diffusion in Living Things
We will use the human body as an example to demonstrate how it allows for maximum diffusion possible.
In this lesson we will look how your body parts are specialised to maximise diffusion, which makes them efficient in exchanging materials with the environment.
We looked at diffusion rate and Fick's law before. Do you remember which factors determine the rate of diffusion? Pick all the options you think are correct.
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In which body parts do you think we find adaptations to increase the surface area? Pick all the options you think are correct.
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How is the body adapted to have a short diffusion distance?
What would we typically find a lot of inside a cell?
Because cells use up materials that they need for various processes when they enter the cell, they generally have a higher concentration of waste materials than the blood that runs on the outside of the cell.
Because cells use up materials that they need for various processes when they enter the cell, cells generally have a higher concentration of waste materials than the blood that runs on the outside of the cell. What does that mean?
So the blood takes away waste materials. What else do you think it does to help efficient exchange of materials with the environment outside the body?
Where is the concentration bigger of the materials that the cell needs?
How can you make sure that waste gases are removed from your body?
Which organ regulates the exchange of gases?
To maximise diffusion, your body has adapted to have large, well **** ventilated exchange surfaces with short diffusion distances and efficient blood supply.