In this 10 minute video Paul Andersen discusses cell communication. He begins by explaining how he communicates with other individuals using various forms of electronic communication. Included in this resource are a worksheet and full transcript of the video.

Transcript added from YouTube subtitles. You can use this to write your own worksheet or quiz.

In this 10 minute video Paul Andersen discusses cell communication. He begins by explaining how he communicates with other individuals using various forms of electronic communication. Included in this resource are a worksheet and full transcript of the video.

Transcript added from YouTube subtitles. You can use this to write your own worksheet or quiz.

Movement of ions in and out of cells is crucial to maintaining homeostasis within the body and ensuring that biological functions run properly. The natural movement of molecules due to collisions is called diffusion. Several factors affect diffusion rate: concentration, surface area, and molecular pumps. This activity demonstrates diffusion, osmosis, and active transport through 12 interactive models.

Learn about semipermeable membranes. If you put eggs and sand through a colander, would they both fall through? Probably not. Only the sand would actually pass through the holes of the colander because the eggs are too large. The colander acts as a semipermeable membrane, allowing some materials through but not others. Let's explore some other semipermeable membranes -like what surrounds our cells to help keep our bodies working and healthy. And eggs are like giant cells. They are a perfect thing to use to explore the science of semipermeable membranes, osmosis, and diffusion. We'll even experience a cool chemical reaction when we place an egg in vinegar. What do you think will happen when this chemical reaction is complete? Developed for grades 6-8 and correlated with Virginia Standards of Learning.