Brefily describe diffusion, Biology

Assignment Help:

Brefily describe diffusion ?

Diffusion :  Diffusion is the process in which there is a net movement of particles of a substance from an area of higher concentration to an area of lower concentration. When a difference in concentration is present from one part of a system to another, the gradual change in concentration is called a concentration gradient. When a solute diffuses from the higher concentration to the lower one, it is said to move down the concentration gradient, or sometimes simply "downhill." After a while, the diffusing substance becomes fully dispersed and the system is said to be in equilibrium.

The size of a given particle can be as small as a molecule, or much larger. Diffusion occurs because all of the tiny particles are in constant motion due to kinetic energy, bombarding each other and rebounding in different directions. The overall net movement results in the particles becoming evenly distributed if given sufficient time.

Since the movement of particles is the result of kinetic energy, the rate of diffusion is a function of the amount of heat energy in a system. This can easily be demonstrated by filling three glasses with water, one with hot water, one with water at room temperature, and one with cold water. Drop exactly one drop of food coloring in each of the glasses of water and observe in which glass the food coloring diffuses the fastest to become evenly colored.

Brownian movement refers to the vibration and oscillation of microscopic particles, which is observable under the light microscope using India ink.

 


Related Discussions:- Brefily describe diffusion

Downers cow syndrome, D o w n e r s cow syndrome The Downer's co...

D o w n e r s cow syndrome The Downer's cow, otherwise known as creepers, is commonly a fatal condition of dairy animal associated with the unsuccessful treatment of cas

Determine the preservation changes while cooking, Determine the Preservatio...

Determine the Preservation Changes While Cooking? While cooking, two preservation changes (at least) occur which include: 1.  Destruction or reduction of microorganisms 2

Nutition in animals, describe each and every step in nutrition in animals?

describe each and every step in nutrition in animals?

Characters of vitamins, Characters of vitamins: Vitamins are organic...

Characters of vitamins: Vitamins are organic substances. They are micronutrients and are required in small quantities. They are not synthesised in the body and therefo

What is neurotransmitters , When the action potential reaches the nerve ter...

When the action potential reaches the nerve terminal it causes the let go of a chemical neurotransmitter by the synaptic vesicles. Mammalian nervous system employs many substances

Two gases are likely to be diffusing in and out of the cell, When a cell is...

When a cell is respiring  aerobically, which two gases are likely to be diffusing in and out of the cell, and in which direction will they be diffusing?   When a cell is res

Australopithecines, The first ever australopithecine fossil was found in 19...

The first ever australopithecine fossil was found in 1924 at Taung, South Africa. It was the skull of a 6 year old child showing a mixture of human and ape like features. This a

Planting bacteria gardens, Planting bacteria gardens When the bacteria ...

Planting bacteria gardens When the bacteria gardens have cooled place them out on the table but do not increase the glass covers unless you are ready to plant them. Toothpicks

Define prevalence and incidence for anorexia nervosa, Define Prevalence and...

Define Prevalence and Incidence for anorexia nervosa? The disorder occurs most commonly in adolescent girls and young women, but adolescent boys and young men may be affected m

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd