Question

What is the process called when a substance's spontaneous movement from a high concentration to a low concentration takes place?

• A. Gaseous exchange
• B. Diffusion
• C. Osmosis
• D. Circulation

Answer 1

Answer:

B. Diffusion

• The spontaneous movement of a substance from an area of high concentration to an area of low concentration is called diffusion.

• Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of lower concentration.

• Diffusion is driven by a gradient in Gibbs free energy or chemical potential.