2-4 Egg Osmosis Lab

Front

What is the special name for water crossing in and out of a cell?

Back

Osmosis

Front

What caused the eggs to gain or lose mass?

Back

Water going into or out of the egg

Front

If we used a control of an egg placed in tap water, and found that the mass changed very little, why?

Back

It must be close to an isotonic solution

Front

What was the dependent variable in this lab that we measured?

Back

The mass of the egg

Front

What was the independent variable in this lab?

Back

The type of liquid used each day

Front

Define osmosis in biological terms.

Back

The movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is an isotonic solution?

Back

A solution where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is a hypertonic solution?

Back

A solution with a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell.

Front

What is a hypotonic solution?

Back

A solution with a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell.

Front

What is the role of a selectively permeable membrane in osmosis?

Back

It allows water to pass through while restricting the movement of solutes.