Egg's shell

INTRODUCTION: 
Osmosis is a vital process in biological systems, as biological membranes are semipermeable. Water molecules travel through the plasma membrane in order to equilibrate the intra and extra cellular concentrations.

OBJECTIVES:
--> Know about the osmosis phenomena.
--> Understand the process of osmosis in plasmatic membranes.

PROCEDURE:
Egg: This experiment will be divided in two days.
FIRST DAY:
- Take a 600mL beaker and put inside the egg.
- Cover the egg with vinegar and make note of what's happening.

Once the egg's shell is removed and the egg is rinsed dry and clean, mesure and weigh the egg. Record the dimensions of each egg in a table.

- Clean the beaker and put the egg inside again.
- Cover it with distilled water. Make note of the volume of solution inside the beaker.

SECOND DAY: 
- Left the egg one day in the distilled water. After about a day, carefully remove the egg using a spoon. Rinse the egg with water and let it dry.

OBSERVATIONS:
We can see that the shell of the egg is more soft because of the water that are inside, if we touch the egg, the egg brekas because of the pressure of the water.

Results:
- Inside the egg we have hypertonic.
-Out the egg we have hypotonic (the water were inside the egg)