Diffusion and Osmosis

Front

What is the part of the cell that regulates what enters and exits it?

Back

Cell membrane.

Front

What term describes the process by which organisms and their cells adjust internally to changing external conditions?

Back

Homeostasis.

Front

In osmosis, do free water molecules move from a higher concentration of solutes to a lower concentration of solutes?

Back

False.

Front

Which direction do water molecules move in relation to the concentration of solutes?

Back

Water molecules move towards a higher concentration of solutes.

Front

What is the definition of a solvent in a solution?

Back

The substance that does the dissolving and is present in greater quantity.

Front

What is diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is a selectively permeable membrane?

Back

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

Front

What happens to a cell in a hypertonic solution?

Back

The cell will lose water and shrink.

Front

What happens to a cell in a hypotonic solution?

Back

The cell will gain water and may swell or burst.