Diffusion and Osmosis Flashcard

Front

What is diffusion?

Back

Diffusion is the process by which particles move from an area of high concentration to an area of low concentration until they are evenly spread out.

Front

What does it mean for a membrane to be semipermeable?

Back

A semipermeable membrane allows some particles to pass through while blocking others.

Front

What is the general term for the movement of particles from high concentration to low concentration?

Back

Diffusion.

Front

What happens during osmosis?

Back

During osmosis, water moves from an area of high concentration of water (low concentration of solute) to an area of low concentration of water (high concentration of solute).

Front

Give an example of osmosis.

Back

Raisins placed in water swell up due to water moving into them.

Front

What is the main driving force behind diffusion?

Back

The concentration gradient, which is the difference in concentration between two areas.

Front

How does temperature affect the rate of diffusion?

Back

Higher temperatures increase the energy of particles, causing them to move faster and diffuse more quickly.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of all types of particles, while osmosis specifically refers to the movement of water across a semipermeable membrane.

Front

What role do cell membranes play in osmosis?

Back

Cell membranes are semipermeable, allowing water to pass through while controlling the movement of solutes.

Front

What is a concentration gradient?

Back

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