Osmosis and Diffusion

Front

What is Selective Permeability?

Back

The ability of the cell membrane to allow some things to pass through while preventing other things from passing through.

Front

What is Equilibrium in the context of cell membranes?

Back

Equal amount of substance on either side of the membrane.

Front

Which way do water molecules move during osmosis when a cell is in a hypertonic solution?

Back

Out of the cell, so the cell shrinks.

Front

What is Osmosis?

Back

The movement of WATER molecules across the cell membrane.

Front

What travels up a person's nose when they smell something?

Back

Molecules.

Front

What is Diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration.

Front

What is a Concentration Gradient?

Back

The difference in concentration of a substance across a space.

Front

What happens to a cell in a hypotonic solution?

Back

Water moves into the cell, causing it to swell.

Front

What is a Semi-Permeable Membrane?

Back

A membrane that allows certain molecules to pass through while blocking others.

Front

What is the role of the cell membrane?

Back

To protect the cell and control what enters and exits.