Diffusion Lab Flashcard A **

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration due to their random motion.

Front

What factors affect the rate of diffusion?

Back

The rate of diffusion is affected by temperature, concentration gradient, size of molecules, and the medium through which diffusion occurs.

Front

What is a concentration gradient?

Back

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

Front

What happens to particles in a fully permeable membrane?

Back

Particles will move freely across the membrane until equilibrium is reached.

Front

What is osmosis?

Back

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

Front

What is a selectively permeable membrane?

Back

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

Front

What is the role of temperature in diffusion?

Back

Higher temperatures increase the energy and movement of molecules, leading to faster diffusion.

Front

What is the significance of molecular size in diffusion?

Back

Smaller molecules diffuse faster than larger molecules due to less resistance in movement.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state where the concentration of molecules is equal on both sides of a membrane.

Front

How does diffusion relate to cell function?

Back

Diffusion is essential for cells to obtain nutrients and remove waste products.