answersLogoWhite

0

What is diffusion and osmosis?

Updated: 9/11/2023
User Avatar

Wiki User

11y ago

Best Answer

Diffusion is the tendency of particles in a gas or liquid to become evenly distributed by moving from areas of greater concentration to areas of lesser concentration. Diffusion is driven by the kinetic energy of particles that is a consequence of temperature. It is an inherently random process and particles continue to spread out until they are evenly distributed within the enclosed area.

Biologically, diffusion is the cause of random movement or net movement of particles from an area of high concentration towards an area of low concentration. Osmosis refers to the flow of particles across a membrane. When active transport is absent, diffusion provides the driving force for osmosis across a fully permeable or partially permeable membrane.

Fully permeable: all particles can move through.

Partially permeable: only certain particles an move through.

Active transport: biochemical processes expend energy to move particles.

Note: Reverse osmosis is basically filtering. Pressure is greater on one side of a partially permeable membrane pushing particles through it.

User Avatar

Wiki User

11y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

12y ago

osmosis is passive transport of water molecules across a selectively permeable membrane.

diffusion is the passive transport of any molecules across a selectively permeable membrane.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is diffusion and osmosis?
Write your answer...
Submit
Still have questions?
magnify glass
imp