OSMOSIS/DIFFUSION

Front

What is diffusion?

Back

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

Front

Which diagram best shows the end result of diffusion?

Back

Diagram J shows the end result of diffusion.

Front

What does passive transport require?

Back

Passive transport requires no energy.

Front

What is the definition of Selective Permeability?

Back

Selective Permeability is the ability of the cell membrane to allow some things to pass through while preventing other things from passing through.

Front

What is osmosis?

Back

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

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

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of particles from high to low concentration, while osmosis specifically refers to the movement of water across a semi-permeable membrane.

Front

What factors affect the rate of diffusion?

Back

Factors include temperature, concentration gradient, and the size of the molecules.

Front

What is a concentration gradient?

Back

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

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.