Diffusion and Osmosis Lab for General Biology BI 101

Biology Department, Saint Anselm College

How to use this page

Click on the thumbnail image or the highlighted text to see a larger version of each specimen.

Materials for lab

Experiment	Materials	Thumbnails (click on thumbnail to see enlarged photo)
Thistle tube	thistle tube, dialysis tubing, corn syrup
Brownian movement	India ink solution for slides (see below)
Liquid in a solid	IKI and Methylene Blue solutions
	Bore and agar plate
	IKI and Methylene Blue in agar
	IKI and Methylene Blue in agar - results
Membranes
	Ohaus Balance
	Glucose solution, thread, dialysis tubing
	Cold water bath
	Warm water bath

How to use this page - Video

Click on the highlighted text for a video of the steps below.

Slides

Brownian Movement - charcoal/ink suspension		higher magnification
Elodea - isotonic 1		lowest magnification
Elodea - isotonic 2		higher magnification
Elodea - isotonic 3		higher magnification
Elodea - isotonic 4		higher magnification
Elodea under osmotic stress 1		higher magnification
Elodea under osmotic stress 2		higher magnification