Question

explain the concept of diffusion​

Answer 1

Explanation:

Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. The material that diffuses could be a solid, liquid or gas. ... One of the main characteristics of diffusion is the movement of molecules along the concentration gradient.

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Answer 2

$\large{ \mathfrak\red{QUESTION}}$

Explain the concept of diffusion.

$\large{ \mathfrak\red{ANSWER}}$

Diffusion:

• Diffusion is the movement of molecules from an area of higher concentration to the area of lower concentration i.e, along concentration gradient.

Explanation:

The molecules of any substance (solid, liquid or gas) are in motion when that substance is above 0 degrees Kelvin or -273 degrees Centigrade. ln a substance, majority of the molecules move from higher to lower concentration, although there are some that move from low to high. The overall (or net) movement is thus from high to low concentration.Eventually, the molecules reach a state of equilibrium where they are distributed equally throughout the area.

Example of Diffusion:

Diffusion is one principle method of movement of substances within cells, as well as cross cell membrane. Carbon dioxide, oxygen. glucose etc. can cross cell membranes.Gas exchange in gills and lungs occurs by this process. Movement of glucose molecules from small intestine lumen into the blood capillaries of vili is another example of diffusion.

Passive transport:

• Because a cell does not expend energy when molecules diffuse across its membrane,diffusion is type of passive transport.