BIOTOXICITY

Material:
- Nanoparticles of silver
- Sugar and yeast
- Distilled water
- Erlenmeyer
- Hot plate
- Ballon
- Spatula
- Pipet

Procedure:
We need to know that the nanoparticles damage the live cells.
- Take three erlenmeyer:

1. Control: One spoon of sugar, yeast and water.
2. The same quantity of sugar, yeast, water and 1ml of nanoparticles of silver.                                         
3. The same quantity of sugar, yeast, water and 3ml of nanoparticles.

- Put the Erlenmeyers in the hot plate.

Conclusions:
The experiment produce CO2 and the ballon inflate.

Question:
Why not inflate the last ballon?
Because the nanoparticles kill the yeast (isn't fragmentation).