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

Medicinal value - conservation of wildlife, Medicinal Value - Conservation ...

Medicinal Value - Conservation of Wildlife About 40% of all drugs used throughout the world have active ingredients extracted from plants and animals. The world-wide annual sa

How do embryos of placental mammals excrete nitrogen wastes, Q. How do embr...

Q. How do embryos of placental mammals excrete nitrogen wastes? Placental animals including embryos and excrete urea, In the adult placental mammal urea is excreted through the

Process for estimation of sucrose by fehling soxhlet method, Explain Proced...

Explain Procedure for Estimation of Sucrose by Fehling Soxhlet Method? Follow the proceedure enumerated herewith and carry out the experiment: 1. Standard titration (Standar

Determine food sources of riboflavin - water-soluble vitamin, Determine the...

Determine the food sources of riboflavin? The food sources of riboflavin include: 1. Rich sources: Liver, dried yeast, egg powder, milk powder. 2. Good sources: Who

Functional morphology of reproductive organs, Normal 0 false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Chemical reactions which are catalysed by enzymes, Give two examples of che...

Give two examples of chemical reactions which are catalysed by enzymes in the course of brewing.  In the course of brewing, enzymes in the grain catalyse the conversion of star

What are some factors that can lead to protein denaturation, What are some ...

What are some factors that can lead to protein denaturation? Protein denaturation can be caused by temperature variation, pH change, alters in the concentration of surrounding

Explain about tropical rain forests, Q. Explain about Tropical Rain Forests...

Q. Explain about Tropical Rain Forests? As you approach the equator the climate becomes increasingly hot and seasonal variation in climate decreases resulting in practically th

Define types of non enzymatic browning reaction, Define Types of Non Enzyma...

Define Types of Non Enzymatic Browning Reaction? Two major types of non enzymatic browning reaction have been recognized to occur in foods during processing. 1. Maillard Rea

Why in some cases is mitosis a synonym of reproduction, Why in some cases i...

Why in some cases is mitosis a synonym of reproduction? In some living beings asexual reproduction happens by many means: binary division, schizogony, budding, grafting, etc. I

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