Water, Biology

Water

Water usually forms about 50% to90% part of living protoplasm. Life upon earth originated in the ocean and the conditions of that aqueous primeval environment have been retained by organisms as the basis integral part of their chemistry. All organisms bave been designed around the4 special properties of water. Some important properties of water are.

(1)   As the best solvent in nature, it forms the base fluid matrix of protoplasm. All other constituents of protoplasm are its solutes.

(2)  Benign an ideal dispersion medium. it causes Brownian movement of colloid particles, resulting into their collision and mutual bombardment. This facilitates reactivity between the various compounds necessary maintaining protoplasm in line state. Thus it serves as the essential medium in which all metabolic activities of protoplasm occur.

(3)   It causes streaming or cyclosis in protoplasm, facilitating its  chemical  exchange with the environment, and transportation of from one part of the body to the others.

(4)   Dissociating into H and OH ions, it become a very good electrolytic solvent, making protoplasm amphoteric. Moreover, it itself participates in certain types of chemical reaction particularly in the hydrolytic breakdown of complex compounds.

(5)   Having a high specific heat coefficient. it minimises temperature variations and, thus protects protoplasm against ill effects of sudden rise or fall of temperature in the environment.

Posted Date: 9/26/2012 6:56:40 AM | Location : United States







Related Discussions:- Water, Assignment Help, Ask Question on Water, Get Answer, Expert's Help, Water Discussions

Write discussion on Water
Your posts are moderated
Related Questions
What is NAD? What is the role of the NAD molecule in glycolysis? NAD (nicotinamide adenine dinucleotide) is a hydrogen acceptor essential as reductant (to receive hydrogen) in

There are three natriuretic peptides-atrial (ANP) stored mainly in the atrium, brain (BNP) stored mainly in the ventricular myocardium and C-natriuretic peptide (CNP) located prima

Q. What are astigmatism and presbyopia? Presbyopia is the visual impairment in which there is loss of the cililary muscle strength thus reducing the ability of the crystalline

what is the biological significance of the skeleton and supporting system in animals

What are the physical properties of Tear Film? Physical Properties of Tear Film: The tear film is a three-layered structure as given below: 1) Outermost Layer: Lipid Layer

Integral plasma membrane proteins are also synthesized by ribosomes on the RER, but become inserted in the rough endoplasmic reticulum membrane rather than transported into the lum

Q. What is meant by unsaturation or saturation of oils and fats? When it is said that a triglyceride is saturated it means that in its molecule the carbon chain is bound in its

Explain about the Proteins? The term protein (Greek: proleuo- to occupy first place) was first suggested by Berzelius to describe the complex organic nitrogenous substances fou

Q. Filming Projection and Technique? Biplane ventriculography is preferred over single plane ventriculography because it gives more information without additional risk to the p

Determine teh term - Magnesium  Magnesium helps in translocation of carbohydrates and regulates the uptake of other nutrients, presumably by helping in the formation of phosph