what is diffusion

Diffusion process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. Passive diffusion is the movement of molecules across a membrane such as a cell membrane.

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What is Diffusion.

. The action of diffusing. Diffusion will continue until this gradient has been eliminated. How it works is that molecules in motion from thermal energy randomly move about. Some substances are not regulated by proteins in the cell membrane which is called simple diffusionIt occurs in low molecular weight substances such as water H 2 O dissolved gases O 2 CO 2 and fat-soluble molecules ethyl alcohol vitamin A.

Help us making Education Universal. Types and Examples of diffusion in biology. This is a video lesson about diffusion that describes how substances move from an area of high concentration to an area of low concentration across a semi-pe. The word diffusion is derived from the Latin word diffundere meaning to spread out.

The meaning of diffusion is the state of being spread out or transmitted especially by contact. 1 Passive a Simple Diffusion b Facilitated Diffusion c Osmosis water only 2 Active a Molecules b Particles Diffusion Diffusion is the net passive movement of particles atoms ions or. Diffusion is the passive movement of molecules from an area of high concentration to an area of low concentration. Explained using animation and illustration Video.

Diffusion is just a process which results from a random motion of tons of molecules. Over time this random walk leads to uniform distribution of. The movement does not require energy. Since diffusion moves materials from an area of higher concentration to the lower it is described as moving solutes down the concentration gradient The end result of diffusion is an equal concentration or equilibrium of molecules on both sides of the membrane.

For example the perfume of any flower will permeate any room right away. Description of Diffusion and Osmosis. Diffusion Osmosis Active Transport There are two ways in which substances can enter or leave a cell. A familiar example is the perfume of a flower that quickly permeates the still air of a room.

How to use diffusion in a sentence. According to Wikipedia diffusion is a process where you can see a net flow of matter from a high-concentration region to a low-concentration region. There are two types of diffusion in biology. Diffusion is different from other transport processes in that it results in mixing without bulk matter flow.

A water solution that contains nutrients wastes gases salts and other substances surrounds cells. Diffusion is defined as the movement of atoms ions and molecules from a region of high concentration to a region of low concentration or down their concentration gradient. In facilitated diffusion a molecule is transported across a membrane with the help of a carrier protein. This is the external environment of a cellThe cells outer surface of the plasma membrane is in contact with this external environment while the inner surface is in contact with the cytoplasm.

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