Diffusion & Osmosis

Front

What happens to cells when a person drinks salty water?

Back

Cells shrink due to water moving out to balance the salt concentration.

Front

What is diffusion?

Back

Diffusion is the process where molecules move from an area of high concentration to an area of low concentration.

Front

Where is there a low concentration of dye in a cup?

Back

At the bottom of the cup, where the dye has not spread.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is an isotonic solution?

Back

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

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, using energy.

Front

What is a concentration gradient?

Back

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

Front

What is the role of a semi-permeable membrane in osmosis?

Back

A semi-permeable membrane allows only certain molecules, like water, to pass through while blocking others.

Front

How does temperature affect diffusion?

Back

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

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of all types of molecules, while osmosis specifically refers to the movement of water.