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STRUCTURE OF WATERIt may interest you to know that water is a universal solvent and is a major constituent of all living organisms. Earth is the only planet where water exists in all its three phases. Availability and absence of water influence the distribution and abundance of plants, animals as well as human societies. The uniqueness of water is due to its structure and properties which are discussed in the following lines.
A water molecule (H2O) consists of two atoms of hydrogen and one oxygen. The hydrogen atoms share their electrons with the oxygen atom. The shared electrons become asymmetrically distributed. The negatively charged electrons are attracted more towards the oxygen nucleus which is more positively charged (8+) than a hydrogen nucleus (I+). Consequently, the hydrogen nuclei develop a smaH (delta) positive charge and the oxygen nucleus a small (delta) negative charge. Such a molecule is known as a polar molecule (Figure shown below). Remember that overall a water molecule is neutral since the number of electrons is equal to the number of protons.
Q. Signs of constrictive pericarditis? 1) Jugular venous pressure (JVP) is elevated in all patients of CP which reflects the elevated diastolic pressure of the right atrium.
How Can Total Count Can Be Obtained? Total count can be obtained microscopically by using fluorescent dyes such as acridine orange or DNA stain DAPI. The counts obtained micros
Explain Procedure for Sub-Culturing of a Culture Now carry out the exercise following the steps given herewith: 1. Sterilize the inoculating loop and needle by heating to re
what are the origin, morphology, active constituents, uses and market preparation of tanco beans ?
ALEURONE GRAINS - Also known as Plant lysosome , because they contain hydrolytic enzymes. Consists of Proteins. They are also known as Aleuroplast because they are ric
Explain about the Spectrophotometer? The spectrophotometer, a key instrument today in biomedical laboratories, was invented in 1939 by the American chemist Arnold O. Beckman (1
All of the following make meiosis different from mitosis; EXCEPT A. Meiosis comprises two separate divisions. B. Meiosis only occurs during embryonic development. C. Chromoso
A 15 mM solution of potassium chloride is needed for and experiment. The only liquid stock that is a available is a 1 M solution. Calculate how much of the stock solution is needed
Excretory organ of lizard.
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