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

How the foams are formed, How the foams are formed? Formation  of a foa...

How the foams are formed? Formation  of a foam is dependent on a foaming agent in the continuous phase prior to dispersion of gas.  The foaming agent must be adsorbed at the su

What is photoperiod, What is photoperiod? Photoperiod is the daily time...

What is photoperiod? Photoperiod is the daily time period of light exposure of a living being. The photoperiod might be vary according to the period of the year.

Lungs - respiratory organs, Lungs - Respiratory Organs In arachnid art...

Lungs - Respiratory Organs In arachnid arthropods such as scorpion and spider, respiration takes place by means of book lungs. There are four pairs of these structures in the

Cardiac cycle, Cardiac Cycle Cardiac cycle has two phases-systole and...

Cardiac Cycle Cardiac cycle has two phases-systole and diastole. Ventricular systole and diastole occur as a result of depolarization and chamber volume and pressure. The di

Which term explains to pituitary gland, In studies of human body, which of ...

In studies of human body, which of the subsequent terms can also be used when referring to the pituitary gland? Is it: a) Pancreas b) Hypozthesis (pron: hypo-fi-sis) c) T

How different is the gametogenesis in men and in women, Q. Concerning event...

Q. Concerning events during the periods of life how different is the gametogenesis in men and in women? The formation of spermatogonia in men takes place during the embryonic p

Diversity2, using examples of invertebrate phyla illustrate how the increas...

using examples of invertebrate phyla illustrate how the increase in complexity is reflected by their nervous system?

Determine instruments that are required for sterilizations, Determine the I...

Determine the Instruments that are Required For Sterilization? The word sterilization is derived from the Latin word 'Sterilic' meaning unable to produce offsprings. Sterilizat

What about foam stability, What about foam stability? Foam stability ca...

What about foam stability? Foam stability can be determined by two factors i.e. drainage and bubble size. The volume of the liquid drained due to gravitational forces when foam

Explain use of food additives - method of food preservation, Explain Use of...

Explain Use of food Additives - method of food preservation? Food additives may be defined as substances added intentionally to food, generally, in small quantities to improve

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