Diffusion and Osmosis Review

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What does equilibrium mean in the context of diffusion?

Back

Equilibrium is the state where the concentration of particles is equal throughout a space, meaning there is no net movement of particles.

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

How do molecules move during diffusion?

Back

Molecules move randomly and spread out from areas of high concentration to areas of low concentration.

Front

What factors affect the rate of diffusion?

Back

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

Front

What happens to water molecules in a hypertonic solution?

Back

In a hypertonic solution, water molecules move out of the cell, causing the cell to shrink.

Front

What happens to water molecules in a hypotonic solution?

Back

In a hypotonic solution, water molecules move into the cell, causing the cell to swell and potentially burst.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy.

Front

What is a concentration gradient?

Back

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