1. Movement Through a Membrane
NYS Diffusion Lab
Movement Through a Membrane

2. http://youtu.be/QU0VBcHnQOk The Benedict’s Test
Benedict’s solution is BLUE and will turn YELLOW, ORANGE, GREEN, OR RED IN THE PRESENCE OF A SIMPLE SUGAR (MONOSACCHARIDE)

3. OSMOSIS is the diffusion of water
Adding SALT water will make a cell SHRINK
Adding DISTILLED WATER will cause a cell to SWELL back up

4. Osmosis Videos http://youtu.be/GOxouJUtEhE

5. Diffusion
Diffusion is the movement of molecules from high to low concentration.

6. Iodine, Glucose, Starch

7. Results Starch + Lugol’s Iodine = PURPLE/ BLUE BLACK
GLUCOSE + Glucose Test Strip = Turns GREEN
STARCH DID NOT DIFFUSE BECAUSE IT WAS TOO BIG!