1/5/11

First off, we went over last night's homework "Troubles with Concentration". The cells were isotonic to each other. A would isotonic to the cells because they had the same concentration. B would be hypertonic to the cells because it has a higher concentration than the cells. C would be hyoptonic because it has less concentration than the cells.

On the bottom, the oval with the nucleus inside of it was the cell and anywhere outdside of it was the cell environment. A was hypertonic because there was 5% of something in the cell environment compared to the cell which had 2% of something. B was isotonic because the cell and the cell environment had the same concentration. ( 2% of something in the cell and the cell environment) C was hypotonic because compared to the cell, the cell environment had less concentration of something than the cell. (o% to 2%)

Then, we did a lab to see what would happen when we placed cells in liquids that were isotonic, hypotonic, and hypertonic compared to the cells on this website -http://www.glencoe.com/sites/common_assets/science/virtual_labs/LS03/LS03.html

Lab Above ^

Be sure to fill out the table/graph and the seven questions (clipboard icon).

Key Terms

Isotonic- Solution has an equal concentration compared to something.

Hypotonic- Solution has a lower concentration compared to something.

Hypertonic- Solution has a higher concentration compared to something.

Concentration- Amount of a material in an area.

Tim S.

Period 4