Osmosis

A special type of transport involving the regulation of water!

Osmosis

• Movement of WATER from areas of greater concentration to areas of lesser concentration!

Solutes drive movement of water!

Terms are used to one solution relative to another!

What conditions are ideal? Red Blood Cell

http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter21/animation__hemolysis_and_crenation.html

You be the doctor!!!

• Your friend has had the Norovirus and is severely dehydrated. What type of solution should be in his/her IV? Explain:– Strongly hypertonic– Weakly hypertonic– Isotonic– Weakly hypotonic– Strongly hypotonic

You be the doctor

Your contact solution should be ___________ to your body’s fluids.

If given a drug intravenously that needs to travel around your body and diffuse into your tissues, it should be in a _____________ solution.

Osmosis in Plants

Watch the following videos to determine what conditions would be optimal for plants!

http://www.linkpublishing.com/video-transport.htm#Elodea_-_Osmosis

Water transport in plants

What happens if the soil is salty?

• We salt roads…how does this affect the nearby plants?

Osmosis Lab:

• We will set up an experiment to test the effects of different concentration sucrose solutions on plant cells & then determine the approximate concentration of sucrose in a given plant!

• Use the websites provided on your labsheet to write an introduction!