Osmosis and Diffusion

Front

What is diffusion?

Back

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

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What regulates what enters and leaves a cell?

Back

The cell membrane regulates what enters and leaves a cell.

Front

What is the primary function of the cell membrane?

Back

The primary function of the cell membrane is to protect the cell and control the movement of substances in and out.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of any molecules from high to low concentration, while osmosis specifically refers to the movement of water.

Front

What is required for active transport?

Back

Active transport requires energy to move particles against their concentration gradient.

Front

What is a concentration gradient?

Back

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

Front

How does temperature affect diffusion?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What role do proteins play in the cell membrane?

Back

Proteins in the cell membrane assist in transport, act as receptors, and provide structural support.