OSMOSIS/DIFFUSION

Front

What is osmosis?

Back

The movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is diffusion?

Back

The movement of molecules from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What does isotonic mean?

Back

A solution that has the same concentration of solutes as another solution, resulting in no net movement of water.

Front

What is a hypertonic solution?

Back

A solution that has a higher concentration of solutes compared to another solution, causing water to move out of the cell.

Front

What is a hypotonic solution?

Back

A solution that has a lower concentration of solutes compared to another solution, causing water to move into the cell.

Front

Define selective permeability.

Back

The ability of a cell membrane to allow some substances to pass through while blocking others.

Front

What is the role of the cell membrane in osmosis?

Back

The cell membrane regulates the movement of water in and out of the cell, allowing for osmosis to occur.

Front

What is equilibrium in the context of diffusion?

Back

A state where the concentration of molecules is equal throughout a space, resulting in no net movement.

Front

How does temperature affect diffusion?

Back

Higher temperatures increase the kinetic energy of molecules, leading to faster diffusion rates.

Front

What is active transport?

Back

The movement of molecules across a cell membrane using energy, typically against their concentration gradient.