Diffusion & Osmosis

Front

What is diffusion?

Back

Diffusion is the process where molecules move from an area of high concentration to an area of low concentration.

Front

What happens to a gummy bear in distilled water?

Back

The gummy bear increases in size because water moves into the bear.

Front

What number best shows an isotonic environment?

Back

1 represents an isotonic environment where the concentration of solutes is equal inside and outside the cell.

Front

What moves particles from low to high concentration?

Back

Active transport is the process that moves particles from low to high concentration, requiring energy.

Front

Where is there a low concentration of dye in a cup?

Back

The low concentration of dye is at the bottom of the cup.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, typically from high to low concentration.

Front

What is an example of active transport?

Back

An example of active transport is the sodium-potassium pump, which moves sodium out of and potassium into cells against their concentration gradients.

Front

What is equilibrium in terms of diffusion?

Back

Equilibrium is the state reached when the concentration of molecules is equal throughout a space, resulting in no net movement.