Osmosis is the passage of water and other liquids through a semipermeable membrane. In metabolism, osmosis regulates the concentration of substances on both sides of the membrane.
Eggs contain a membrane through which osmosis can take place. In this experiment, you will determine whether water flows primarily in or out of an egg by observing changes in liquid level and in the size of the egg.
Source: Mehas & Rogers
Measure the height of the liquid in the beaker and record it in your data table.
After 30 minutes, again measure the height of the liquid in the beaker. Record in your data table.
Label the beaker with the variation number. Cover it with plastic wrap. Leave overnight.
Record your observations on the heights of the liquid and the appearance of the egg and the liquid on your data table. Answer the questions on your lab sheet.
Source: Mehas & Rodgers