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

Function of glutamate, Q. Function of Glutamate? Glutamate It is the...

Q. Function of Glutamate? Glutamate It is the principal excitatory transmitter in the brain and is found throughout the central nervous system. Receptors Glutamate rec

Meiosis and Mitosis, #question.Consider a cell that has 10 homologous pairs...

#question.Consider a cell that has 10 homologous pairs of chromosomes and is just starting to go through meiosis. After meiosis is complete, there will be 40 cells that each contai

Nutritional management for diarrhoea, Q. Nutritional management for diarrho...

Q. Nutritional management for diarrhoea? The conservative concept of treatment for diarrhoea was not in favour of feeding adequate amount of food. However, with the identificat

Modern viral diseases, Important Modern viral diseases By  extensive us...

Important Modern viral diseases By  extensive use of vaccination and chemotherapy. Certain  serious viral diseases of the past. Like smallpox. Have been completely or largely e

How to identify the metal out of which the wire is made, A wire 50.0 m long...

A wire 50.0 m long and 2.00 mm in diameter is connected to a source with a potential difference of 9.11 V, and the current is found to be 33.7 A. Assume a temperature of 20°C and,

What do you mean by periodical, Q. What do you mean by Periodical? A pe...

Q. What do you mean by Periodical? A periodical is a publication appearing at regular intervals. Each issue is called a number and collectively these numbers comprise a volume.

What are the vascular bundles, What are the vascular bundles? How does conf...

What are the vascular bundles? How does configuration of the vascular bundles within the stem differentiate monocots from dicots? The Vascular bundles are segments of xylem and

Determine the principles of bcc, Determine the Principles of BCC BCC ...

Determine the Principles of BCC BCC should be integrated with program goals from the starting. BCC is a necessary part of diabetes prevention, care and support programs, and

State the term in broad - lunule, State the term in broad - Lunule. In ...

State the term in broad - Lunule. In sand dollars, notches or holes which pass through the body of the animal. Their function is not fully understood though may be involved in

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