Period 8- Concept Map Discussion

Today in class we changed seats, so that everyone can sit with di

fferent people. We split into groups so that we could get started on our new assignment.

We had to use the words: cell membrane, diffusion, passive transport, osmosis, and concentration. With these words we had to create a concept map, which is basically connecting the words in circles around them, to others that have something in common/or the same general idea.

Beside is a picture of the concept map which the class before helped to create. To sort out everything and to make sure you don't get confused you should remember that:

• Diffusion is the process of molecules spreading, an example of that is when you walk in Hollister towards the cologne section, the scent/molecules spread out in the air.
• Two types of diffusion are passive and active transport. Both involve going through a membrane such as the nuclear membrane.
• Diffusion for active transport occurs from low to high concentration and for passive transport diffusion occurs from high to low concentration

Next, we opened our textbooks to page 60 and 61 to look at active transport again because many people didn't remember what it was. We soon came to a conclusion that:

• Active transport uses energy to produce diffusion so it's like a block or sled going up a hill because it doesn't "want" to go up the hill so it needs energy to do that, it doesn't automatically go up.
• On the other hand passive transport doesn't need or use energy to produce diffusion. So it's like a sled going down a hill. It doesn't try, it goes down automatically. This type of diffusion helps and benefits the cell. Also, when passive transport occurs in water it is known as osmosis. In addition an example of passive transport we have seen is the dye moving if a cheek cell.

Lastly, the main idea is that diffusion reaches an equilibrium, which means the gradient of the molecules is even, and that is a good thing.

Finally at the end of class we shared our concept map and Mr. Finley showed/explained his concept map.

Heads up: WE HAVE NO HOMEWORK

I hope you get a better general idea about diffusion from reading my blog.

--S.K P8