Diffusion and Osmosis Baggie Lab

Front

What is the function of the cell membrane?

Back

The cell membrane acts as a 'Gatekeeper' of the cell, controlling what enters and exits.

Front

What molecule did not diffuse through the membrane in the Baggie lab?

Back

Starch did not diffuse through the membrane.

Front

What substances were added to the inside of the cell (bag) at the start of the lab?

Back

Starch and water were added to the inside of the cell.

Front

What is osmosis?

Back

Osmosis is the movement of water across a membrane.

Front

What does 'selectively-permeable' mean?

Back

It means the cell controls what passes in and out of the cell.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is the role of the iodine indicator in the Baggie lab?

Back

The iodine indicator is used to test for the presence of starch.

Front

How does temperature affect the rate of diffusion?

Back

Higher temperatures increase the energy of molecules, leading to faster diffusion.

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane allows certain substances to pass while blocking others.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water leaves the cell, causing it to shrink.