NYS Lab Diffusion through a Membrane

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What regulates what enters and leaves a cell?

Back

The Cell Membrane regulates what enters and leaves a cell.

Front

Which substance does not diffuse through a membrane in the experiment?

Back

Starch does not diffuse through the membrane.

Front

Where will glucose be found after 24 hours in the experiment?

Back

Glucose will be found both inside and outside the cell.

Front

What happens to an egg placed in pure water for 48 hours?

Back

The egg will gain water and swell.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain substances to pass through while blocking others.

Front

What is the role of the cell membrane?

Back

The cell membrane protects the cell and controls the movement of substances in and out.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell.