Diffusion
-You should be able to define diffusion.
"Diffusion is a form of passive transport (no energy required) in which substances flow from an area of high concentration to an area of low concentration:"
OR
-E.g. of diffusion in animal and plants
1. Oxygen and carbon dioxide gases are small enough to pass from the alveoli of the lungs to the single celled capillaries that surrounds the alveoli.
2. Diffusion occurs when digested food in the blood stream (high in concentration) enter individual cells (low concentration of nutrients).
3.Plants transfer food particles from phloem and water particles from xylem through the process of diffusion.
"Diffusion is a form of passive transport (no energy required) in which substances flow from an area of high concentration to an area of low concentration:"
OR
Diffusion is the movement of a substance from a region of higher concentration
to a region of lower concentration. Diffusion is the movement of gas or solute
molecules from a region of higher concentration to a region of lower
concentration until they are equal (from BBC )
-E.g. of diffusion in animal and plants
1. Oxygen and carbon dioxide gases are small enough to pass from the alveoli of the lungs to the single celled capillaries that surrounds the alveoli.
2. Diffusion occurs when digested food in the blood stream (high in concentration) enter individual cells (low concentration of nutrients).
3.Plants transfer food particles from phloem and water particles from xylem through the process of diffusion.
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| A simple example of diffusion taking place |
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| Diffusion is also important for the endocrine system |
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| Diffusion in the Lungs |
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