https://learn.concord.org/resources/2/diffusion
( https://authoring.concord.org/activities/12 )
This activity introduces the role of diffusion in supplying cells with nutrients and removing wastes.
This activity runs entirely in a Web browser. Preferred browsers are: Google Chrome (versions 30 and above) Safari (versions 7 and above), Firefox (version 30 and above), Internet Explorer (version 10 or higher), and Microsoft Edge.
Performance Expectations
From Molecules to Organisms: Structures and Processes. Students who demonstrate understanding can: Develop and use a model to describe the function of a cell as a whole and ways parts of cells contribute to the function.