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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. Can you define P-Waves? Changes in P-wave morphology have been well described in resting tracings and are very useful in identifying right and left sided hemodynamic alterat
Explain the history of Darwin's Finches? The most well known evidence upon which Darwin based his theory was the distribution pattern of the Galapagos finches. The Beagle's voy
Explain Energy requirement during tuberculosis Energy : The criteria to establish the energy intake is the body weight status coupled with the rise in body temperature. Con
control of microorganisms by chemical method.
Specific Gravity The density of a substance is defined as mass per unit volume. The density of a substance is a characteristic property and has a definite value at a given te
Mammals - Regeneration in Vertebrates Mammals are not capable of regenerating limb or tails. However, there are a few exceptions where lost tissues are regenerated. The annual
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
Intracellular sodium concentration of the motor neuron A complete motor neuron is removed from a frog and placed in normal physiological saline at 1 AM. The neuron is healthy.
What is eukaryotic cell?
root plants
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