Day 4 and Wrap Up

Friday we finished up the egg lab and had some fun with our "bouncy" egg.  In the mean time though, we continued through notes about osmosis. Here were some pics from the lab

Many of you attempted to "bounce" the egg
that was now full of water

Looking MUCH different than yesterday!!

And the best part of all - disposing of the eggs!

Today then we started with the following daily question:

Because water moves from an area of high concentration to low concentration, water will move OUT of the cell.  Since the solute concentration is higher outside of the cell than in - it is considered to be a hypertonic solution.  The cell would shrink in this type of solution.


We then finished up the osmosis notes and examples and you then had time to finish up your egg lab and application questions.

Some demonstrations I did to show you how most cell
are made up of a TON of water (like this water balloon)

The cells are suspended in fluid and when the concentration
of water is different inside the cell then outside the cell
water moves across the membrane and this is known as osmosis