DIFFUSION AND OSMOSIS

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 cells?

Back

Equilibrium is the state where the concentration of substances is equal inside and outside the cell.

Front

What is homeostasis?

Back

Homeostasis is the process by which a cell or organism maintains a stable internal environment despite changes in external conditions.

Front

What does semi-permeable mean?

Back

Semi-permeable means that a membrane allows some substances to pass through while blocking others.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy.

Front

What is a hypotonic solution?

Back

A hypotonic solution is one where the concentration of solutes is lower outside the cell than inside, causing the cell to swell as water enters.

Front

What is a hypertonic solution?

Back

A hypertonic solution is one where the concentration of solutes is higher outside the cell than inside, causing the cell to shrink as water leaves.

Front

What is isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is the role of the cell membrane?

Back

The cell membrane controls what enters and leaves the cell, maintaining homeostasis.