Water is the most common substance found in living organisms. The total water content in different organisms ranges from 70% to 98%. The properties of water are determined by its unique chemical structure. The water molecule has an angular structure, hydrogen atoms are located at an angle of 104.5 °. This arrangement of the atom determines its polarity, the polar molecules are called a dipole. A hydrogen atom has a positive charge in the water molecule, and a negative charge on the oxygen side. Since oxygen has a higher electronegativity, it shifts the electron density from hydrogens during the formation of a covalent polar bond.
A dipole acts like a magnet in a cell, on the one hand a positive charge, on the other hand a negative charge. Due to this polarity, water molecules combine with each other and with other molecules, being a unique solvent in the cells of mineral salts. Due to this, water is involved in metabolic processes, forming ions.
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