Diffusion & Osmosis Flashcard

Front

What is diffusion?

Back

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

Front

What is osmosis?

Back

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

Front

What happens during equilibrium?

Back

Equilibrium is reached when a substance is evenly distributed throughout a space, meaning there is no net movement of molecules.

Front

What is an example of diffusion in everyday life?

Back

An example of diffusion is the smell of food traveling from the kitchen to the dining room.

Front

What is the main difference between diffusion and osmosis?

Back

Diffusion refers to the movement of any molecules, while osmosis specifically refers to the movement of water molecules.

Front

What occurs when a gummy bear is placed in water?

Back

The gummy bear will expand as water moves into it through osmosis.

Front

What is the direction of movement for molecules during diffusion?

Back

Molecules move from an area of high concentration to an area of low concentration.

Front

What is active transport?

Back

Active transport is the movement of molecules against their concentration gradient, requiring energy.

Front

What is a selectively permeable membrane?

Back

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

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.